Abstract
Despite rapid advance in the prevention, diagnosis, and treatment, infectious diseases remain a central challenge for global health policy. In the twenty-first century, the life sciences—including microbiology, virology, and immunology—have been marshalled as key tools in the fight against infectious disease, and the promotion of global health. Rapid advance in these fields, however, has given rise to the “dual-use dilemma,” when one and the same piece of scientific research or technology has the capacity to help or harm humanity. While not unique to fields that address infectious disease, contemporary cases of dual-use research are largely identified in the context of the life sciences. In this chapter I outline the debate about dual-use research in the life sciences, in particular the ethics of dual-use research. After a historical overview of the dual-use dilemma in the twenty-first century, I examine ethical issues in attempting to trade off the risks and benefits of dual-use research. I address how we select alternative, less risky experiments; translational issues arising for dual-use research; and political commitments to realise the benefits and mitigate the risks arising from such research. I then discuss the governance of dual-use research, before concluding with a brief discussion on priority setting in infectious disease research as a path forward for policymakers.
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1 Introduction: Two Stories of Emerging Infectious Diseases
Infectious diseases present an important challenge for the health and security of modern communities. Despite staggering advances in medicine and public health through the twentieth century, common infectious diseases remain one of the top five causes of years of life lost around the globe.Footnote 1 An important component of the continued fight against infectious diseases is recognised to be basic scientific research into the biology of infectious organisms: microbiology, virology, and immunology among others.
In the beginning of the twenty-first century, two significant events mobilised global attention on infectious diseases as both a health and security challenge. The first occurred in 2001, when letters containing bacillus anthracis were sent through the United States Postal Service, ultimately killing five people of twenty-two who were infected.Footnote 2 The so-called “amerithrax” attacks were decisive in pushing the threat of infectious into the national security spotlight.
In response to the amerithrax attacks, the United States Congress passed the Project Bioshield Act in 2004. Among other things, the act authorised the Secretary of Health and Human Services to conduct and support research and development activities for countermeasures in biological emergencies, and increased the capacity of the National Institutes of Health and National Institute of Allergy and Infectious Diseases to conduct research and respond to biological threats. In 2006, the Pandemic and All-Hazards Preparedness Act established the Biomedical Advanced Research and Development Authority, which would manage Project BioShield and guide research and development in aid of creating novel medical countermeasures against infectious diseases and Chemical, Biological Radiological, and Nuclear weapons.
In 2003, the emergence of severe acute respiratory syndrome (SARS) shocked the international community. While the threat of “emerging infectious diseases” (EID) had been flagged by the US and Canada in the 1990s,Footnote 3 SARS was frightening both for the pace at which it moved, and the unexpected nature of its emergence. After more than 8000 cases over 17 countries, and killing almost 10% of those infected, SARS was described as a “wake-up call” by then Director-General of the World Health Organisation (WHO) Margaret Chan. In 2005, in part as a response to SARS, the International health Regulations (IHR) entered into force. The IHR, among other things, coordinates the reporting of events to the WHO that may represent a “Public Health Emergency of International Concern,” such as a major influenza pandemic. It also requires Parties to the IHR—the 196 members of the World Health Assembly—to ensure their national health surveillance and response capacities meet criteria set out in the Regulations.
These initiatives have thrown basic scientific research into the spotlight as a key weapon against the fight against infectious disease. As human and non-human animal communities become more interconnected, our climate changes, we encroach evermore into our remaining wilderness, and use existing drugs to fight diseases, our disease landscape is changing. As our mastery of biology changes, moreover, it becomes increasingly plausible that a malevolent actor, non-state group, or nation could create and deploy biological weapons. These dual biological threats—so-called naturally occurring and human-created—have situated modern biology as both a threat to human health and security, and its ultimate saviour.
The name we give to this problem is the dual-use dilemma: when one and the same piece of scientific research or technology has the capacity to help or harm humanity. While much if not most scientific research is dual-use in some trivial sense, i.e. it has the capacity to inflict some harms and/or some benefits, the kind of dual-use research I am concerned with is research that has the capacity to inflict very great harms and/or benefits. Such a benefits might include, for example, the cure for a highly virulent infectious disease or “potential pandemic pathogen,” such as avian influenza. A commensurate potential harm might be the creation of such a potential pandemic pathogen.Footnote 4 This research poses an ethical issue because the capacity of dual-use research to be used or misused invokes questions, inter alia, about the limits of scientific freedom, and kinds of values science promotes, or ought to promote, and the distribution of the risks and benefits of scientific innovation in society. Dual-use presents a dilemma because, in some cases, it is not clear where the balance of risks and benefits, or rights, lies.
In what follows, I outline the debate about dual-use research in the life sciences, beginning at the turn of the twenty-first century. I then examine ethical issues arising in the analysis of the balance of risks and benefits of dual-use research. I drill further into an inquiry into risks and benefits and examine how we select alternative experiments, translational issues arising for dual-use research, and political commitments to realise the benefits and mitigate the risks of dual-use research. I then turn to governance issues, and those of scientific freedom. I conclude with a brief discussion of priority setting, and how the foundational policies that promoted basic research in the life sciences may also compromise global health and security.
2 Dual-Use Research in the Life Sciences
The story of dual-use is now seventeen years in the making. For ease of reading, I will describe three broad phases of the debate: the early years (2001–2011); the “ferret flu” years (2011–2014); and the gain-of-function (GOF) debate (2014–present). Each phase is fascinating and worthy of a separate inquiry, but I restrict myself to the central points of each episode that are needed for the analysis to come.
2.1 The Early Years: Mousepox, Polio, and Toxic Milk
While the story of dual-use has, inevitably, come to revolve around the United States and its policies, the dual-use dilemma in the life sciences has its origins in Australia. Ronald Jackson and Ian Ramshaw worked as part of a team sponsored by the Australian Commonwealth Scientific and Industrial Research Organisation (CSIRO) and the Australian National University (ANU) to create a recombinant form of the myxoma virus, a poxvirus that infects rabbits. In the 1950s, myxoma had been used to control the plagues of rabbits that had devastated the Australian countryside since the late nineteenth century. While the initial release was almost totally successful, the small number of rabbits that survived inevitably did what they did best—bred like rabbits—back to their original population size.Footnote 5 Ramshaw, a student of Frank Fenner (better known for his work eradicating smallpox and a stunt in which he and two colleagues inoculated themselves with the myxoma virus, to demonstrate its safety in humansFootnote 6), was along with Jackson charged with coming up for a cure to this resistance, and put an end to the plague.
The strategy Jackson and Ramshaw used was simple: use the viral machinery of myxoma to render rabbits infertile. In order to make their lives easier in the early stages of research—again, basic scientific research—they chose to use mice and the ectromelia or mousepox virus as their model organism. Rabbits are more expensive and larger than mice, making experiments with them less convenient to use; ectromelia is also a better-characterised poxvirus than myxoma. Their experiments with ectromelia showed some initial success: mice infected with the virus would remain infertile for between five and nine months.Footnote 7
Jackson and Ramshaw wanted higher rates and durations of infertility, so they sought to further enhance the virus to express the interleukin-4 protein, a cytokine present in mammals that plays a key role in the immune system. By encouraging the production of interleukin-4, the hope was that the mouse’s immune system would actually assist the virus in the attack against its host’s reproductive system. The results, however, were unexpected. A paper in 2001 by the team in the Journal of Virology reported that more than sterilizing the mice, the virus outright killed its hosts. And not just sometimes: the virus killed 100% of the normal mice and vaccinated mice, and 60% of mice already genetically resistant to ectromelia.Footnote 8
The central issue that arose from this research is that while mousepox doesn’t infect humans, smallpox does. A disease that killed more humans than any other in history, smallpox was declared eradicated on May 8 of 1980 by Fenner, and humanity’s victory over the virus is arguably one of the greatest triumphs in the history of modern medicine and public health. Few people today have been vaccinated against smallpox–why vaccinate against an extinct species?–and those who have lost their immunity long ago. Until 2014, when six vials of smallpox were discovered in a freezer in the old National Institutes of Health campus in Bethesda, MD [SZABO], it was thought that the virus only survived under lock and key at the Centers for Disease Control (CDC) in Atlanta, GA, and VECTOR, the Russian equivalent of the CDC in Sverdlosk.
The publication of the results of Jackson and Ramshaw’s work coincided with the Amerithrax attacks, and in early 2002 the US Central Intelligence Agency released a report titled The Darker Bioweapons Future, listing the mousepox study as evidence that the capacity for state and non-state actors to build novel, sophisticated biological weapons already existed.Footnote 9 In response, the US Government commissioned a committee of the National Research Council to assess the risk of dual-use research in the life sciences. That committee’s report, Biotechnology Research in an Age of Terrorism, later named the “Fink report” after the committee’s chair Gerald Fink, recommended among other things the education of scientists on dual-use research, the establishment of the National Science Advisory Board for Biosecurity (NSABB), and the international harmonisation of biosecurity norms.Footnote 10 It also outlined seven “experiments of concern”, which:
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1.
Would demonstrate how to render a vaccine ineffective;
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2.
Would confer resistance to therapeutically useful antibiotics or antiviral agents;
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Would enhance the virulence of a pathogen or render a nonpathogen virulent;
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Would increase transmissibility of a pathogen;
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Would alter the host range of a pathogen;
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Would enable the evasion of diagnostic/detection modalities;
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Would enable the weaponisation of a biological agent or toxin;
A follow up report in 2006, Globalisation, Biosecurity, and the Future of the Life Sciences, (the “Lemon-Relman report”) further recommended increased capacity for public health to respond to biological weapons, the promotion of a “culture of awareness” in the scientific community, increased biological expertise in the security community, and a broader assessment of what constituted a “threat” in dual-use than its predecessor. In the same year the NSABB was founded within the National Institutes of Health (NIH) as an advisory committee to the NIH and US Government on issues related to dual-use.
In the meantime, dual-use research continued to crop up. In 2002, scientists at State University of New York Stony Brook, funded by the US Defense Advanced Research Projects Agency (DARPA), successfully synthesised the poliovirus from its base sequence.Footnote 11 This marked the first time a virus had been synthesised, and was by all measure a scientific breakthrough. Yet while the polio had attenuated virulence due to difficulties in the synthesis process,Footnote 12 it opened the way to the synthesis of more complex and dangerous agents for use as biological weapons—again, such as smallpox.
In 2005, two researchers from Stanford modelled an attack on the US food supply, using the example of the release of the botulinum toxin in the milk supply.Footnote 13 Botulinum toxin is the most powerful toxin on earth, and widely used in clinical medicine for its paralytic properties. It, however, is a potent biochemical toxin, has been used in former biological weapons programmes (including the former Soviet bioweapons program, which ran unknown to the world until 1992).Footnote 14 Moreover, it can be obtained, in bulk, online as part of discount or counterfeit cosmetic surgery products (where the toxin goes by the trade name Botox).Footnote 15 The research predicted that up to 200,000 people, mainly children and the elderly, would die if 1 kg of the toxin was released at the right point in the milk distribution system in the US. While a clear warning for government, it also was charged with providing a blueprint for terrorists, which led the US government into an unsuccessful plea to have the publication suppressed.Footnote 16
At the same time, scientists at the CDC proceeded to piece together the genetic sequence for the 1918 H1N1 “Spanish Influenza” that killed 50–100 million people.Footnote 17 The scientists later synthesised the virus, and tested its virulence in nonhuman primates.Footnote 18 The NSABB was consulted on the dual-use aspects of the research: while on the one hand scientists argued that the reconstruction of the virus could give insight into what made it so devastating,Footnote 19 concerns remained that the creation of such a virus posed a risk if aspiring bioweaponeers were to do the same.Footnote 20
In 2007, the NSABB released a draft framework for the oversight of dual-use life sciences research. In this, they codified the term “dual-use research of concern” (DURC), initially proposed by the Fink report but now defined as
[r]esearch that, based on current understanding, can be reasonably anticipated to provide knowledge, products, or technologies that could be directly misapplied by others to pose a threat to public health and safety, agricultural crops and other plants, animals, the environment, or materiel.Footnote 21
This framework maintained that, while regulation on the funding, conduct, or communication of dual-use research might be necessary, the judgement of researchers was still the dominant factor in preventing the misuse of emerging life sciences research and technology.Footnote 22 The framework recommended further awareness raising, education, and training in the responsible communication of research, defining a period of dual-use that centred on the self-governance of individual scientists.
2.2 Ferret Flu
The debate about dual-use calmed in the wake of the 1918 flu experiments. In 2011, this calm was disrupted with the announcement that two papers, slated for publication in Science and Nature, had described the creation of recombinant strains of highly pathogenic avian influenza (HPAI) H5N1 that were transmissible via respiratory droplets (were “airborne”) between ferrets.Footnote 23 The studies were significant because HPAI H5N1, up until 2016, only produced 854 recorded cases of H5N1 in humans, but 52% of those infected had died. In comparison, the 1918 flu pandemic had a case fatality rate of approximately 2.5%.Footnote 24 HPAI H5N1 only infected humans from birds, primarily poultry stocks, but had not undergone sustained transmission between humans in the wild. Ferrets are a common immunological model for flu pathogenesis and transmission in humans; the implications of the studies were that wild-type HPAI H5N1 could, in principle, develop the capacity to transmit between humans and thus trigger a potential pandemic with unprecedented lethality.
These “gain of function” (GOF) studies, so called because they followed a common virology practice of inducing novel mutations into viruses to modify their function, were conducted independently by groups at the University of Wisconsin-Madison in the US, and Erasmus University in the Netherlands. The NSABB was asked to review the studies, and recommended that both studies be redacted, suppressing the sequence information and key methods of the studies that would give individuals the capacity to reproduce the viruses.Footnote 25 Their reasoning followed the model for dual-use: while proponents of the work claimed that the research would improve surveillance efforts by identifying the mutations to look for that would signal an impending pandemic, and enhance efforts to create medical countermeasures against pandemic HPAI, critics noted that the same research offered a method to develop precisely such a virus for use on the human population.Footnote 26
In 2012 the authors of the 2011 H5N1 studies and a group of colleagues declared a moratorium on GOFR on highly pathogenic H5N1 avian influenza strains in a letter to Science. They wrote the moratoria should last for 60 days, and include a meeting of experts to discuss how best to assure the public, provide room for discussion of the merits and risks of the studies, and find solutions to challenges posed by the research.Footnote 27 The moratorium ultimately lasted 9 months, after the US Government requested an indefinite extension on the moratorium to allow time to craft appropriate policy.Footnote 28 During this time, the World Health Organisation (WHO) held a meeting of experts in the manner suggested by the authors of the moratorium letter, which concluded with a rough scientific consensus that both studies should ultimately be published in full.Footnote 29 The NSABB subsequently reviewed and approved revised versions of the two papers, which included additional discussion of the public health benefits the authors believed could result from the work.Footnote 30
The papers were published in 2012,Footnote 31 and in January 2013 scientists declared the moratorium over, claiming “the aims of the voluntary moratorium have been met in some countries and are close to being met in others.”Footnote 32 In February 2013, the Department of Health and Human Services published policy describing seven criteria that studies like the H5N1 studies would have to meet in order to be funded. These criteria included high significance for public health, the lack of feasible alternatives to answer the same scientific question, and the appropriate management of bio safety and Biosecurity risks.Footnote 33
2.3 Biosafety and Gain of Function
From their final recommendations in 2012, the NSABB did not meet again until 2014.Footnote 34 That year, two sets of revelations reignited the GOF debate with a slight twist. First, it was revealed that gain of function studies involving the creation of novel, recombinant “potential pandemic pathogens” (PPPs) such as those in 2011 were being funded by the US, China,Footnote 35 the European Union,Footnote 36 private and public funders in the UK,Footnote 37 and the governments of Japan,Footnote 38 and the Netherlands.Footnote 39 The viruses had diversified, as well: in 2014, GOF had proliferated beyond HPAI H5N1 to H7N1,Footnote 40 H9N1,Footnote 41 and H7N9.Footnote 42
Second, the debate about dual-use shifted from predominantly biosecurity concerns to those biosafety concerns, motivated by a number of problematic incidents involving US laboratories. First, the CDC announced that an accidental release of anthrax had occurred when an improperly inactivated sample had been moved out of a high containment laboratory, potentially exposing 70 employees to the bacterium.Footnote 43 Next, the United States Department of Agriculture (USDA) reported that a shipment of low pathogenicity avian influenza from the CDC had been contaminated with HPAI; the researchers at USDA discovered this when poultry inoculated with the samples began dying at an alarming rate.Footnote 44 Finally, a former Food and Drug Administration (FDA) lab on the National institutes of Health Campus in Bethesda, Maryland, reported finding a shoe box full of dangerous viral samples, including a number of samples of smallpox.Footnote 45
In response to these events, and the prompting of concerned scholars and scientists,Footnote 46 the US Government imposed a funding pause on 18 government funded GOF experiments on influenza, severe acute respiratory syndrome (SARS) coronavirus, and Middle East respiratory syndrome (MERS) coronavirus; paused the future funding of such research; and advised private funders to do the same. This pause came with the a “deliberative process” involving the National Academies of Science,Footnote 47 NSABB, a risk and benefit assessment of GOF,Footnote 48 and an ethics white paper on GOF research.Footnote 49
The result of this process was a series of recommendations produced by the NSABB on the funding and conduct of GOF research. The NSABB acknowledged there was some GOF research that ought not to be conducted for security and safety reasons.Footnote 50 They provided a series of policy guidelines that would be reproduced, with minor amendments, in the White House Office of Science and Technology Policy’s Recommended Policy Guidance for Departmental Development of Review Mechanisms for Potential Pandemic Pathogen Care and Oversight (P3CO).Footnote 51 This guidance outlined the policy principles that should guide the funding and conduct of GOF research moving forward, and noted that an agency’s adoption of policy consistent with P3CO would constitute the end of the funding pause. In December of 2017, the US Department of Health and Human Services released such a policy,Footnote 52 and the pause was deemed to be at an end.
This is only a sketch of the debate on dual-use research, a debate that has taken seventeen years and is still ongoing. For example, researchers in Canada in 2016 announced that they had successfully synthesised the horsepox virus, an extinct poxvirus that shares homology (genetic structure) with smallpox. This has scared some policymakers, but I set it aside here because while interesting, it shares enough features with the polio case and the 1918 flu case that it doesn’t raise novel ethical issues. Rather, I use the above as context for detailing key ethical issues that will make up the rest of this chapter.
3 Risks and Benefits
Dual-use has, historically, been framed as a question of the balance of risks and benefits posed that inhere to scientific research. The literature on GOF research, in particular, focused on the question of whether the risks of GOF research, i.e. the accidental or deliberate release of a novel PPP causing a global pandemic, were outweighed by the potential benefits of the research in terms of contributions to science, disease surveillance, and medical countermeasures.Footnote 53 A preliminary question is, then, whether this is all that really matters for the purpose of dual-use.
To illustrate the pervasiveness of this framing, consider that the Fink report. When discussing the balance between scientific freedom and security, the committee focussed in the main on scientific freedom as instrumentally valuable to achieving scientific and material progress.Footnote 54 The Lemon-Relman report concurred, citing National Security Decision Directive 189 (NSDD-189) as the basis for maintaining policies and practices that promoted the free and open exchange of information in the life sciences. NSDD-189 is significant in US science policy: it makes a canonical distinction between “basic” and “applied” scientific research, and affirms the US national interest in the open communication of basic scientific research (i.e. free of government classification). The basis for this, in turn, is the strategic interest the US has in using basic science research to achieve its economic and security goals.Footnote 55
But scientific freedom is more than an instrumental good. On the one hand, scientific freedom is important for its own sake—we might think that, all other things being equal, a scientific enterprise in which individual scientists make their own choices about which research to pursue (conduct, communicate, etc.) is better than one in which scientists are restrained in their activities.Footnote 56 Moreover, scientific research might be considered to be derivative of other important civil liberties, such as freedom of speech and/or inquiry.Footnote 57
Any governance measure that purports to keep scientific research open in order to maximise the benefits of scientific research must also contend with a lack of necessary or sufficient connection between scientific freedom and scientific results. The physical sciences, in particular, have a strong tradition of achieving incredible progress in highly restrictive environments. The maintenance of “classified communities” in which scientists are free to communicate, but only within a small community, has created rapid scientific progress (though perhaps not always promoting the values we want).Footnote 58 While the life sciences does not currently adopt such a practice—or, at least, not widely—there is no in principle reason why scientific freedom is a necessary condition of scientific advancement.
This case is illustrative of how the debate about dual-use frequently elides conceptual nuances about the ethics of pursuing research that poses serious, at times population-level risks and benefits to the public. In some cases, this may not make a difference to ultimate decisions. One could imagine, for example, an experiment outlining a recombinant strain of smallpox modified in the style of the mousepox experiment, and confirmation that this strain had the same transmissibility as wild-type smallpox, but with 100% lethality and the ability to overcome antivirals (which the Australian mousepox strain did).Footnote 59 We might think that in such an extreme case, whether or not there is some additional value to scientific freedom is a moot point.
In many if not most other cases, however, the risks are less than existential,Footnote 60 and the potential benefits less than beatific. These make up the paradigm cases of dual-use, though they may not in the future. In those cases, we need to account for other considerations. A preliminary issue is that the way we account for risks and benefits may differ. This was an acute challenge for the GOF risk and benefit assessment. While risk could be modelled numerically, the analysis of benefits was constrained to a qualitative examination of potential benefits, based in the main on open-ended interviews with subject matter experts in health, science, and security.Footnote 61
This empirical issue points to a series of broader conceptual issue for dual-use research. We typically and perhaps justifiably tend to think of risks and benefits as straightforwardly comparable or commensurate. But this need not be the case. To begin, it isn’t clear that the kinds of benefits we typically describe for dual-use infectious disease research—saving lives—are morally equivalent to the typical risks we assign to dual-use research in terms of lives lost. We could imagine a dual-use dilemma, for example, in which there was the expectation of some positive use saving 1000 lives, and the risks of misuse resulting in an expected 1000 lives taken by a malevolent user. It isn’t clear that saving 1000 lives from an avoidable death that is not murder are morally equivalent to 1000 lives taken by a malevolent actor. Some might claim “justice delayed is justice denied” in the case of scientific progress; those same people may be reluctant to say that their failure to pursue one line of research is effectively the killing of those people.
This dovetails into a stronger issue around the pursuit of alternatives of dual-use research. Advocates for GOF research have argued that GOF as a methodology has unique epistemic merits. While other experiments may allow us to demonstrate the potential for a pathogen to alter its host range or experience enhanced transmissibility or virulence, advocates maintain that only GOF can show us this is possible. As such, a change to an alternate methodology deprives us of the one methodological tool we have to conclusively prove that a (wild-type) virus can acquire the potential to cause a human pandemic.Footnote 62
Yet it isn’t clear either that this is truly unique of GOF research, or that this unique benefit is the benefit that matters for an analysis of dual-use research. One alternate experiment that might be to choose specific parts of a viruses to investigate: to determine whether a virus with a substituted HA protein would bind to human receptors we could use an attenuated virus rather than its wild-type progenitor, rendering our experiment much safer. A more radical alternative might be cell-free study of single proteins—for example, H5 or H7 receptor binding to mammalian sialic acids—and eliminate the need for a live virus (at least, in initial research).Footnote 63
These alternate experiments offer to potentially answer the same question. Yet why consider only these? We could offer a series of alternatives that accomplish the same benefit qua preventing the spread of some infectious disease through alternate means, even those that do not rely on further infectious disease research. We know, for example, that global health capacities are still sorely lacking in many nations, including the developed world. We could envisage abandoning potential dual-use research for a public health solution; simply allocating the funds we otherwise would have spent on that research to, say, public health surveillance. We could, alternatively, spend the same money in some totally other way to benefit human health—improving traffic safety, for example.Footnote 64
This is still fairly simple; for other instances of dual-use, it is even less clear. In the case of the mousepox study, the claimed potential benefit was the eradication of rabbit plagues. As an Australian, I can confidently say that this would lead to improved wellbeing for humans in Australia, but there are also a range of important values that might be at stake: the value of the natural environment for its own sake; of biodiversity; of the well-being of intelligent non-human mammals (of which there are many) in the country; redressing environmental injustices imposed upon the indigenous human population of Australia, of whom those who live on their traditional lands are worst affected by the undermining of the Australian natural environment.
In principle, the kinds of harms about which we should be concerned are similarly subject to variation. What is commonly unacknowledged about the mousepox case is that even before the IL-4 mutation that made it so deadly, what is unrecognised about the research programme is that it was one in which scientists were on a quest for an infectious contraceptive. Conceivably, this could be used by some kind of malevolent actor to render humans infertile, which would undermine a serious, central life plan of many billions of people.Footnote 65 While there is some welfare component to this kind of harm, we might think that people’s autonomy is undermined, as is their ability to flourish, in a way that is (dis)valuable for its own sake.Footnote 66
Talk of flourishing identifies ways in which we might think about different timescales for risks. The central debate around dual-use revolves around the prospect of acute and extreme harms. The paper focusing on botulinum toxin in the US milk supply, for example, claimed that the use of 1 kg of botulinum toxin could cause an expected 200,000 deaths. This is a large, single-source attack, comparable to a disease pandemic—between four and eight years of flu mortality in the US, rolled into a single attack. While these attacks undoubtedly arise from collective actions,Footnote 67 they culminate in an event that we can (and maybe should) treat in the singular.
In contrast, consider deaths from road fatalities, or something similar. Approximately 32,000 people die on American roads each year. They do so, however, a few (or one) at a time. Is such a thing possible in the context of dual-use, and should it feature in a scheme to weigh the risks and benefits of such research? To the former, the answer is a likely “yes.” Consider, for example, that in the last year there have been three very public self-experiments in synthetic biology, a discipline that seeks to transform biology into a predictable and tractable engineering discipline, and which has been identified as a field with strong dual-use potential.Footnote 68 All three cases—two in which individuals injected themselves with CRISPR-Cas9 constructs,Footnote 69 another in which an individual with human immunodeficiency virus (HIV) discontinued his antiretroviral treatments and injected himself with an experimental gene therapyFootnote 70—were done outside of laboratory conditions, without safety equipment. Or consider that in the last half decade there have been a slew of attempted ricin poisonings committed by individuals who distilled the compound in their homes.Footnote 71 While the last example is in chemistry and not biology, it seems clear that there are in principle malevolent, reckless, or otherwise problematic cases where biology is misused, but on a small scale. We should then be concerned that, as biology diffuses from the province of a few to totally ubiquitous, that even a low rate of individual or small group-harming misuses could lead to a large number of deaths.
Responses to these events might have different implications. On the one hand, it is possible that a large-scale biological attack will happen in the next decade: security experts to whom I have spoken often go further to say such an attack is likely.Footnote 72 But in the meantime, an unregulated market for biologics on the Internet, pursued by amateur biologists, could spark a rash of deaths that exceeds a large biological attack over the medium term to misadventure, lax biosafety, and the proliferation of biological technologies.Footnote 73
On the other hand, companies and groups often have strong incentives to avoid predictable, statistically likely deaths. There are a serious of reputational and resource incentives, for example, that might make a biotechnology startup likely to seek to avoid deaths caused by users buying inadequately quality-controlled products. On the other hand, the likelihood of a mass-casualty event being caused by that same firm, or the kind of cost it would incur on a limited-liability actor (who lacks the resources or is protected from full liability) might attenuate incentives to act. A world of private biological enterprise might under protect us from very large, very rare harms.Footnote 74
4 Translation
The above discussion has focussed in the main on risks; a look at the literature will find this to be relatively normal for the dual-use dilemma. Benefits tend to receive much less explicit critical analysis, although all of the challenges described above arguably can all be said to occur if one were to look at the benefits side of the dilemma. Are there any issues that apply, however, uniquely, distinctly or first and foremost to benefits?
I would argue that a critical issue facing benefits is that of translation. The benefits most often identified in the context of dual-use research apply to human health. But it is common knowledge that human health outcomes are rarely produced as a result of a single experiment, or even a line of research. This is in part because translation from basic science—and dual-use, in the main, has been a problem for basic science—to clinical or public health practice is rarely straightforward.
With this in mind, it isn’t clear what stock we should place in claims about the purported benefits of dual-use research. Of our paradigm cases, the mousepox and botulinum cases present the strongest and most direct benefits. In the case of mousepox, the central translational issue that remained was to apply what was learned in a mouse model to rabbits. The benefit of a recombinant myxoma virus to human health is indirect in the sense that the eradication of an invasive pest benefits humans in second or higher-order degrees, but the achievement of those benefits was largely contingent on the application of knowledge from one virus to a related virus. This work was confirmed in 2004.Footnote 75
In the case of botulinum toxin, the benefits were arguably more straightforward. Wein and Liu presented, in the context of their initial paper, recommendations for securing the milk supply against a potential terror attack.Footnote 76 While Wein claimed the US Federal and State Governments ultimately never acted on those recommendations,Footnote 77 the benefits were there for the taking.
Other studies, however, are not so straightforward. GOF is both most salient to a discussion of infectious disease, and has received substantial attention in the context of the deliberative process. Some proponents have suggested that, for example, GOF research involving the creation of novel pandemic influenza strains benefits human health by informing the selection of seasonal influenza strains for vaccine development.Footnote 78 However, it has been argued elsewhere that this claim conflates “gain-of-function,” a relatively common virology technique in which novel mutations are introduced into any virus to determine which mutation leads to a change in phenotype, and GOF research involving the creation of novel variants of HPAI that have enhanced virulence, transmissibility, or host range. That is, folks who argue about the benefits of GOF research of concern tend to rely on their membership of a much larger set of experiments.Footnote 79 To date, evidence that the 2011 GOF studies contributed to the particular health goal of selecting seasonal influenza strains is slight, and that which does exist is controversial.Footnote 80
In the development of pandemic vaccines, moreover, the situation looks even grimmer. GOF research may provide a benefit, for example, by identifying a potential pandemic strain against which we could start to develop a vaccine. But the chances that such a vaccine will target a naturally occurring pandemic strain have been argued to be relatively slight.Footnote 81 This is because what occurs in the wild is not necessarily the same as what occurs in the lab—the studies identify a path to potential pandemic status for flu, but it is not clear that this is the path, rather than one of many potential paths.Footnote 82
This is not to say that GOF research, among others, does not have value for human health. Its value, however, might be more attenuated than is typically argued. GOF studies, like so much microbiological infectious disease research, are model organism studies. They use well-characterised strains of flu (e.g. the Erasmus GOF study used a strain isolated in Indonesia in 2004) as a model for the class of pathogens known as highly pathogenic avian influenza H5N1 viruses; they also use ferrets as a model for humans in terms of the way that the flu binds to receptors in their upper respiratory tracts.Footnote 83 These models could be causal models, in the sense that they purport to give accurate information about what really happens in humans (and HPAI viruses). But it is more likely, on the face of things, that they are hypothesis-generating tools that scientists use to ask questions about, for example, the nature of viral pathogenesis.Footnote 84 This is useful scientific research in the sense that it can ask and answer important questions, but it is not directly or self-evidently connected to human values.
This is not unique to the beneficial applications of dual-use research. The weaponisation of a pathogen is an exercise in translation, where a promising candidate for a biological weapon is developed into munitions of some kind (e.g. biological cluster bombs).Footnote 85 It is, moreover, a complex activity that often requires serious infrastructure, up to and including a state driven weapons programme.Footnote 86 We can, and should, ask whether the risks posed by dual-use research are subject to the same translational problems as the benefits problematised above.
Where, I believe, benefits and harms differ is twofold. The first is that in many paradigm cases, the harms that are described are not vulnerable to the same translational issues as benefits. In GOF research of concern in particular, the potential harms associated with this research inhere to the recombinant viruses themselves. While weaponizing a flu virus is and would be very difficult, the harms about which we are concerned do not depend on weaponisation. The benefits of dual-use research, on the other hand, frequently require further translation.
The other reason is heuristic rather than conceptual or empirical. In documents on dual-use, there is frequently a distinction made between harms and benefits in which the benefits of dual-use research are regarded as likely and inevitable, while the risks or harms are (at least partially) discounted based on translational issues. The Fink report’s discussion of the synthesis of poliovirus noted that the method was exceptionally laborious and technical, thus undermining its utility for bioterrorism; the report, however, at numerous points asserts the “great potential benefits” inhering to the life sciences without a more nuanced account of what these might be or how they might arise.Footnote 87 In 2010, the US President’s Commission for the Study of Bioethical Issues released a report on synthetic biologyFootnote 88; in an interview with The Scientist, Amy Gutmann, the chair of that committee, set apart the “likely” benefits from the “prospective” risks of the field.Footnote 89 These two examples speak to a perceived tendency of advocates of a particular technology to omit the complex transitional issues facing prospective benefits, while framing risks in a way that is sceptical of their possibility. If we are going to be wary of one form of translation, we should be wary of both, and begin with an account of the difficulty of deriving benefits from emerging science and technology.
5 Political Commitments
Translation dovetails with political commitments. Let’s assume that GOF research really did give knowledge we could use to create a vaccine against a HPAI H5N1 pandemic. And let’s say that we had some reasonable expectation that this pandemic was going to be the next pandemic. Does this mean GOF research has potential benefits?
Not necessarily. Vaccines don’t save lives; vaccinations save lives.Footnote 90 In particular, we need to move from basic science, to a candidate vaccine, to the distribution of that vaccine to patients. Even if we set aside all technical scientific obstacles to this outcome, there still comes a question of political will, and whether our institutions are designed to accomplish this kind of outcome.Footnote 91
We ought to care about political and individual commitments to action, and we ought to do so symmetrically. By symmetrically, I mean that when thinking about dual-use, we ought to treat like commitments alike whether or not those commitments are toward the beneficial or malevolent uses of life sciences research and technology. This is something that has, until recently,Footnote 92 been overlooked in the debate on dual-use. In examining dual-use in synthetic biology, the President’s Commission for the Study of Bioethical Issues frequently claimed that the benefits of synthetic biology were imminent and sought-after, while the harms were merely prospective and not intended.Footnote 93 Yet we know, for example, that global healthcare continues to labour with poor or poorly allocated resourcing, while non-state groups have explicitly advocated for the use of unconventional weapons. Given that commitments toward achieving health outcomes are frequently lacklustre or subject to weakness of will (political or otherwise), and that terrorists frequently mean what they say, it appears that we should take both at least as seriously as each other.
There are two possible approaches to how these kinds of commitments should feature into our decisions to act.Footnote 94 One, a possibilist explanation, would say that our appeal to potential benefits stands if it is possible that we can produce the will to act on our commitments. Here, we only need for it to be possible to act upon our stated commitments, even if we have reason to believe we won’t actually muster the will to accomplish what we set out to do so.Footnote 95
Another way we could think about this is an actualist account of our motivations to act. Here, the likelihood that we will actually commit to a certain action matters as much as the likelihood that such an action would succeed if taken. On this account, we must have some belief that an actor (or set of actors) will commit to act in certain way to classify it as a potential benefit or harm, and the strength of our belief in this potential benefit or harm would vary as a function of our belief in our actor’s commitment to act. (This applies for a stochastic as well as a game theoretic account of actors).
It isn’t immediately clear which of these is preferable or rational to accept. On the one hand, actualism appears to conform to an intuition that we ought to really believe that someone is going to X before forming a belief about X’s relative goodness or badness. Our belief about “a nonstate group using recombinant smallpox to eradicate the human race” should surely be action guiding if and only if we have reason to believe that someone genuinely intends to do so, and (in addition to technical considerations) has the will to carry out their plan. A risk that no one intends to take isn’t a risk in some important sense.
On the other hand, actualism might give us a really bleak look on the potential benefits of science. Political commitments, especially—never mind the commitments of scientists who may change their research focuses or lose funding; or the public, whose concerns and focus might change—are highly responsive to acute incentives and unresponsive to long-term needs. The West African Ebola epidemic, which received attention in 2015 and 2016 as an extreme threat,Footnote 96 is now a distant memory for developed nations. Actualism might attenuate our priors about the chances of a catastrophic bioterror attack, given what such an attack would require of an actor,Footnote 97 but it might also attenuate our priors about the chances of any proposed benefits of dual-use research obtaining in practice.
6 Weighing Benefits and Risks, and Setting Priorities
The ethical issues that arise in the context of dual-use research in the basic life sciences, including the study of infectious disease, invoke considerations of important fundamental values. Utility, characterised as the aggregate well-being of a population (up to “global” utility, i.e. the welfare of all living humans or moral status-holders) is implicated in dual-use research because of the potential for harm or benefit qua health for populations. Liberty is implicated because the governance of dual-use research—such as the potential suppression or censorship of research—may infringe upon fundamental rights to inquiry and/or speech, and professional rights to scientific freedom. And equality is implicated because those who benefit from dual-use research may be distinct from those who are harmed; the distribution of well-being (and/or liberties) is potentially morally significant in addition to its aggregate.
None of these three values is absolute, or always prior to the others.Footnote 98 Scientific freedom presumably isn’t assured just in cases where we expect science to benefit us, especially (as a classical utilitarian might require) a requirement to maximally benefit the globe. If this were the case, the landscape of scientific research might be completely different: for example, migraines have the same burden on health (in disability adjusted life years) as HIV/AIDS in the USA but receive 1/100th of the funding.Footnote 99 In the global context, depression and injuries (among others) are underfunded relative to their overall burden of disease.Footnote 100 Yet I suspect most would say that while it might be permissible to change funding priorities, mandating scientists conduct research only certain issues would be an unjustifiable burden on their freedom (in addition to any utilitarian assertions about the role of scientific freedom in promoting health outcomes).
On the other hand, some research, as the NSABB acknowledged, might simply be too dangerous to conduct or publish. Say scientists attempted to make a highly transmissible disease—say measles—engineered to become 100% lethal. Or consider when Vincent Racaniello, a virologist at Columbia University, posited that a study to confer respiratory transmission via respiratory droplets (colloquially, to “make airborne”) on HIV would present an “interesting” study.Footnote 101 Arguably, both hypothetical studies pose so much risk that no appeal to liberty or equality would outweigh the value of preventing the potential harms of such research.
Finally, sometimes the conduct of risky research ought to be responsive to considerations of equality.Footnote 102 Biosafety regulations in the US and elsewhere, for very dangerous pathogens, aim to protect not just those in the lab but those outside the lab. Even in cases where the harms of dual-use research are fairly limited, it is pro tanto unethical to expose individuals to risk who do not stand to benefit from our risk-taking behaviour. Biosafety regulations on dual-use research should aim not (merely) to protect against absolute utility loss, but to protect those who do not stand to benefit (or benefit as much) from scientific research against its potential risks.Footnote 103
All things considered, we should adopt a position of pluralism about the ethics of dual-use research. We should aim, where possible, to guide scientific research away from dual-use research through a commitment to funding research whose benefits clearly outweigh its risks, commensurate with scientific freedom. That is, we should “design in” our ethical considerations into the scientific process from the earliest stage.Footnote 104 This should be matched with institutional support to realise the benefits of dual-use research while mitigating its risks. This institutional support, moreover, should seek to distribute both risks and benefits fairly among a population, such that the risk-taking entailed by dual-use research represents a fair scheme of risk sharing within society.Footnote 105 In particularly acute cases of dual-use, where the potential risks out the purported benefits of particular research, government should be empowered to impose moratoria on research or communication of dual-use.Footnote 106
7 Conclusion
Dual-use research is a key issue in the ethics of basic scientific research, and a particularly acute concern for research into infectious diseases that have, or can be engineered to have high virulence and transmissibility in humans. Over 17 years, the debate about dual-use has progressed from one in which scientific self-governance was held to be sufficient for the management of dual-use concerns, to the acknowledgement that at times even ostensibly beneficial scientific research may entail risks to great to justify its pursuit or publication. Future work will no doubt focus on how the life sciences research enterprise can be best designed to identify dual-use potential early, and prevent the proliferation of risky research.
Notes
- 1.
GBD 2016 Causes of Death Collaborators (2017).
- 2.
Inglesby et al. (2002).
- 3.
Weir (2012).
- 4.
Evans et al. (2015a).
- 5.
Bartrip (2008).
- 6.
Henderson (2011).
- 7.
Jackson et al. (1998).
- 8.
Jackson et al. (2001).
- 9.
Central Intelligence Agency (2003).
- 10.
National Research Council (2004a).
- 11.
Cello et al. (2002).
- 12.
Selgelid and Weir (2010).
- 13.
Wein and Liu (2005).
- 14.
Leitenberg et al. (2012).
- 15.
Coleman and Zilinskas (2010).
- 16.
Wein (2009).
- 17.
Tumpey (2005).
- 18.
Kobasa et al. (2007).
- 19.
Palese et al. (2006).
- 20.
Kennedy (2005).
- 21.
National Science Advisory Board for Biosecurity (2007).
- 22.
Ibid.
- 23.
Enserink (2011).
- 24.
Taubenberger and Morens (2006).
- 25.
National Science Advisory Board for Biosecurity (2011).
- 26.
Evans (2013).
- 27.
- 28.
Casadevall and Shenk (2012).
- 29.
Fouchier et al. (2012).
- 30.
National Science Advisory Board for Biosecurity (2012).
- 31.
- 32.
Fouchier et al. (2013).
- 33.
The United States Government (2013).
- 34.
Michael Osterholm and Paul Keim, personal communications, 2014.
- 35.
Zhang et al. (2013).
- 36.
Herfst and others (n 30).
- 37.
- 38.
Ibid.
- 39.
Herfst and others (n 30).
- 40.
Sutton et al. (2014).
- 41.
Kimble et al. (2014).
- 42.
Richard et al. (2013).
- 43.
Centers for Disease Control and Prevention (2014a).
- 44.
Centers for Disease Control and Prevention (2014b).
- 45.
Dennis and Sun (2014).
- 46.
For example, the Cambridge Working Group Consensus Statement on the Creation of Potential Pandemic Pathogens (PPPs), of which the author is a founding member and author. http://www.cambridgeworkinggroup.org.
- 47.
- 48.
Gryphon Scientific (2016).
- 49.
Selgelid (2016).
- 50.
National Science Advisory Board for Biosecurity (2016).
- 51.
Office of Science and Technology Policy (2017).
- 52.
Department of Health and Human Services (2017).
- 53.
- 54.
National Research Council (n 8).
- 55.
Hindin et al. (2017).
- 56.
Evans (n 24).
- 57.
Miller and Selgelid (2008).
- 58.
- 59.
- 60.
This is not to say that existential risks do not deserve nuanced analysis, just that in some cases the risks may outweigh all other benefits a fortiori. See e.g. Bostrom (2014).
- 61.
Gryphon Scientific (n 45).
- 62.
Casadevall et al. (2014).
- 63.
Evans (2018).
- 64.
Evans (n 24).
- 65.
Pennings (2008).
- 66.
Kleinig and Evans (2013).
- 67.
Evans (2015).
- 68.
Tucker (2011).
- 69.
Zhang (2018).
- 70.
Brown (2017).
- 71.
Evans (2015). A law enforcement agent, speaking on conditions of anonymity, has noted that the number of these cases is an order of magnitude larger than reaches news outlets; most of these attempts, however, are not as advanced as those attempts that do make headlines.
- 72.
These claims have been made at meetings subject to, or by speakers who invoked The Chatham House Rule: The first meeting of the 2015 class of the Emerging Leaders in Biosecurity Initiative Fellowship in Washington, DC., March 2015; The Australian National University meeting on dual-use research in 2008 funded under the auspices of the Wellcome Trust Grant “Building a Sustainable Capacity in Dual-Use Bioethics;” among others.
- 73.
Evans and Selgelid (2014).
- 74.
Lipsitch et al. (2016).
- 75.
Kerr et al. (2004).
- 76.
Wein and Liu (n 11).
- 77.
Wein (n 14).
- 78.
Schultz-Cherry et al. (2014).
- 79.
Lipsitch (2016).
- 80.
Gryphon Scientific (2016).
- 81.
Enserink (n 21); Enserink (2012).
- 82.
Lipsitch and Galvani (2014).
- 83.
Herfst and others (n 30).
- 84.
LaFollette and Shanks (1995).
- 85.
Enemark (2005).
- 86.
- 87.
National Research Council (2004b).
- 88.
Presidential Commission for the Study of Bioethical Issues (2010a).
- 89.
Akst (2010).
- 90.
I’m grateful to Jason Schwartz for this aphorism.
- 91.
Evans (n 64).
- 92.
Evans and Selgelid (n 69).
- 93.
Presidential Commission for the Study of Bioethical Issues (2010b).
- 94.
Jackson and Pargetter (1986).
- 95.
While Jackson and Pargetter use a binary model, Holly Lawford Smith has offered a probabilistic model of accessibility of actions by individuals and collectives. See Lawford-Smith (2012).
- 96.
Evans (2016).
- 97.
Carus (2015), Leitenberg, Zilinskas and Kuhn (n 12).
- 98.
Selgelid (2009).
- 99.
Kaiser (2015).
- 100.
Gillum et al. (2011).
- 101.
See the June 1, 2014 episode of This Week in Virology. http://www.microbe.tv/twiv/twiv-287-a-potentially-pandemic-podcast/. Accessed 25 March 2018.
- 102.
Considerations of justice might also enter into our equation; I set this aside here.
- 103.
Evans, Lipsitch and Levinson (n 50).
- 104.
Evans and Selgelid (n 69).
- 105.
Hansson (2011).
- 106.
Evans (n 24).
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Evans, N.G. (2020). Dual-Use and Infectious Disease Research. In: Eccleston-Turner, M., Brassington, I. (eds) Infectious Diseases in the New Millennium. International Library of Ethics, Law, and the New Medicine, vol 82. Springer, Cham. https://doi.org/10.1007/978-3-030-39819-4_9
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