The COVID-19 pandemic has shown that zoonotic diseases are a great threat for humanity. During the course of such a pandemic, public health authorities often apply the precautionary principle to justify disease control measures. However, evoking this principle is not without ethical implications. Especially within a One Health strategy, that requires us to balance public health benefits against the health interests of animals and the environment, unrestricted use of the precautionary principle can lead to moral dilemmas. In this article, we (...) analyze the ethical dimensions of the use of the precautionary principle in zoonotic disease control and formulate criteria to protect animals and the environment against one-sided interpretations. Furthermore, we distinguish two possible conceptions of the precautionary principle. First, we notice that because of the unpredictable nature of zoonotic diseases, public health authorities in general focus on the idea of precaution as preparedness. This reactive response often leads to difficult trade-offs between human and animal health. We therefore argue that this policy should always be accompanied by a second policy, that we refer to as precaution as prevention. Although zoonotic diseases are part of our natural world, we have to acknowledge that their origin and global impact are often a consequence of our disturbed relation with animals and the environment. (shrink)

Accelerated changes to the planet have created novel spaces to re-imagine the boundaries and foci of environmental health research. Climate change, mass species extinction, ocean acidification, biogeochemical disturbance, and other emergent environmental issues have precipitated new population health perspectives, including, but not limited to, one health, ecohealth, and planetary health. These perspectives, while nuanced, all attempt to reconcile broad global challenges with localized health impacts by attending to the reciprocal relationships between the health of ecosystems, animals, and humans. While such (...) innovation is to be encouraged, we argue that a more comprehensive engagement with the ethics of these emerging fields of inquiry will add value in terms of the significance and impact of associated interventions. In this contribution, we highlight how the concept of spatial and temporal scale can be usefully deployed to shed light on a variety of ethical issues common to emerging environmental health perspectives, and that the potential of scalar analysis implicit to van Potter’s conceptualization of bioethics has yet to be fully appreciated. Specifically, we identify how scale interacts with key ethical issues that require consideration and clarification by one health, ecohealth, and planetary health researchers and practitioners to enhance the effectiveness of research and practice, including justice and governance. (shrink)

Culling is used in traditional public health policies to control animal populations. These policies aim primarily to protect human interests but often fail to provide scientific evidence of effectiveness. In this article, we defend the need to move from a strictly anthropocentric approach to disease control towards a One Health ethics, using culling practices as an example. We focus on the recent badger culls in the UK, claiming that, based on data provided by the English Government, these culls may be (...) unjustified, all thing considered. We highlight the relevance of ethical reasoning rooted in One Health for this discussion, and make several suggestions including a moratorium on culling until data are provided to support the effectiveness of culling; to conduct a randomized trial to compare proactive culling with alternative methods; to apply deliberative democratic methods to assess public opinion towards the culls, and to find in Brexit an opportunity for aiming for more effective control measures. (shrink)

Emerging infectious diseases remain a significant and dynamic threat to the health of individuals and the well-being of communities across the globe. Over the last decade, in response to these threats, increasing scientific consensus has mobilised in support of a One Health approach so that OH is now widely regarded as the most effective way of addressing EID outbreaks and risks. Given the scientific focus on OH, there is growing interest in the philosophical and ethical dimensions of this approach, and (...) a nascent OH literature is developing in the humanities. One of the key issues raised in this literature concerns ethical frameworks and whether OH merits the development of its very own ethical framework. In this paper, we argue that although the OH approach does not demand a new ethical framework, an OH approach does furnish the theoretical resources to support a novel ethical framework, and there are benefits to developing one that may be lost in its absence. We begin by briefly explaining what an OH approach to the threats posed by EIDs entails before outlining two different ways of construing ethical frameworks. We then show that although on one account of ethical frameworks there is no need for OH to generate its own, there may be advantages for its advocates in doing so. (shrink)

A One Health approach holds great promise for attenuating the risk and burdens of emerging infectious diseases (EIDs) in both human and animal populations. Because the course and costs of EID outbreaks are difficult to predict, One Health policies must deal with scientific uncertainty, whilst addressing the political, economic and ethical dimensions of communication and intervention strategies. Drawing on the outcomes of parallel Delphi surveys conducted with policymakers in Singapore and Australia, we explore the normative dimensions of two different precautionary (...) approaches to EID decision-making—which we call regimes of risk management and organizing uncertainty, respectively. The imperative to act cautiously can be seen as either an epistemic rule or as a decision rule, which has implications for how EID uncertainty is managed. The normative features of each regime, and their implications for One Health approaches to infectious disease risks and outbreaks, are described. As One Health attempts to move upstream to prevent rather than react to emergence of EIDs in humans, we show how the approaches to uncertainty, taken by experts and decision-makers, and their choices about the content and quality of evidence, have implications for who pays the price of precaution, and, thereby, social and global justice. (shrink)

Capps and Lederman, in a paper published in this journal in 2015, argued that, at the time, the dismal circumstances of the Ebola outbreak in West Africa was an opportunity to revisit public health responses to emergent infectious diseases. Using a One Health lens, they argued for an ecological perspective—one that looked to respond to zoonoses as an environmental as well as public health concern. Using Ebola virus disease as an example, they suggested shared immunity as a strategy to vaccinate (...) both humans and great apes. Since then, vaccination as a conservation strategy in this case has been debated and at least one great ape vaccination trial has been proposed: some, however, are less convinced of the ethical arguments to pursue vaccinating wild animals. Using this opportunity, we review Capps and Lederman’s arguments and directly respond to the plausible objections to them. (shrink)

The 2013 Ebola virus outbreak in West Africa, as of writing, is declining in reported human cases and mortalities. The resulting devastation caused highlights how health systems, in particular in West Africa, and in terms of global pandemic planning, are ill prepared to react to zoonotic pathogens. In this paper we propose One Health as a strategy to prevent zoonotic outbreaks as a shared goal: that human and Great Ape vaccine trials could benefit both species. Only recently have two phase (...) 2/3 Ebola human vaccine trials been started in West Africa. This paper argues for a conceptual change in pandemic preparedness. We first discuss the ethics of One Health. Next, we focus on the current Ebola outbreak and defines its victims. Third, we present the notion of a ‘shared benefit’ approach, grounded in One Health, and argue for the vaccination of wild apes in order to protect both apes and humans. We believe that a creation of such inter-species immunity is an exemplar of One Health, and that it is worth pursuing as a coextensive public health approach. (shrink)

Within the domain of public health, vector-borne diseases are among the most vehemently discussed issues. Recent scientific breakthroughs in genome editing technology provided a solution to this issue in the form of a gene drive that might decrease and even eradicate vector-borne diseases. Gene drives are engineered, and designed genes that can break typical inheritance rules and be passed to almost all of the carrier’s offspring. This genome editing and gene drive technology has become a powerful tool for ecological and (...) environmental engineering, through which man can manipulate his surroundings, adjusting it to himself and directly mastering evolution and the ecosystem. Although the gene drive technology has been perceived as promising in the public health domain, ecological implications of its use are not to be underestimated. The primary aim of this paper is to overcome the ongoing discussion which mostly focuses on whether priority should be given to the environment or to public health, and to find an adequate answer and solution. In this quest to find the proper answer and solution, Pierre Teilhard de Chardin’s thought might be useful, especially his concepts of the biosphere and the noosphere which may provide some clarifications as to why we are at the moment so cautious with gene drive technology and how we need to move towards a better common future on earth. (shrink)

The COVID-19 pandemic once again confirmed that zoonotic diseases are a serious threat to humanity. These infectious diseases, transmitted from animals to humans, have the power to cause a global health crisis. Over time the risk on these outbreaks has increased. Some of the main drivers are global population growth, urbanization, worldwide transport, increased demand for animal protein, unsustainable agriculture, and climate change. This development has fueled a renewed interest in the relation between human, animal and environmental health. This was (...) framed in the concept of One Health: the integrative effort of multiple disciplines working locally, nationally, and globally to attain optimal health for people, animals, and the environment. At present, One Health is the worldwide standard to combat zoonotic diseases. In an ideal world such a strategy should lead to a better health for humans, animals and our environment. However, in practice it is not self-evident that a One Health approach in zoonotic disease control is actually in the interest of animals or the environment. From a holistic One Health perspective it can be difficult to accept the culling of healthy animals to protect public health. The same goes for long term confinement of free-range poultry, whose housing systems are often not suitable for this purpose, to prevent avian influenza outbreaks. Or antimicrobial reduction policies that lead to higher disease incidence and mortality in animals. These ethical considerations formed the start of this thesis. The aim of my research is to clarify the ethical assumptions of a One Health approach in zoonotic disease control, to explore how these can be coherently understood and justified and to indicate what this implies for policymaking. The outcome of my research contributes to the development of an ethic of One Health and will hopefully lead to a more socially acceptable zoonotic disease control. This project is related to the interdisciplinary Wageningen UR strategic research theme ‘Global One Health’. From my conceptual analysis, it follows that there is no universal interpretation of the One Health concept nor of a One Health approach in zoonotic disease control. Nevertheless, One Health has produced several successes in zoonotic disease control, surveillance and research. Due to its ambiguity, the One Health concept functions as a boundary object: by leaving room for interpretation to fit different purposes it facilitates cooperation. In many cases this results in the promotion of health of humans, animals and the environment. However, there are also situations in which this mutual benefit of a One Health approach is not that evident. For instance, when healthy animals are culled to protect public health. To address these moral dilemmas, it is important to develop an ethical framework. Such an ethic of One Health starts with acknowledging the moral status of animals and the indirect moral obligations we have towards ecosystems. Furthermore, it is necessary that we find an appropriate definition of health, which encompasses all three components of One Health. In chapter 3, I present the results of an empirical study on normative presuppositions of health professionals involved in zoonotic disease control policies in the Netherlands. This study reveals that in theory these professionals adhere to a holistic view of the One Health concept. However, in practice an anthropocentric approach was dominant. The study identified public health as a trumping moral value, which reveals an inherent field of tension with the core of One Health thinking. Furthermore, a lack of ethical expertise in control systems for zoonotic diseases can lead to misconception of ethical principles, like the precautionary principle. In chapter 4, I discuss that within a One Health strategy, that requires us to balance public health benefits against the health interests of animals and the environment, unrestricted use of the precautionary principle can lead to moral dilemmas. It must at least be clear that there is a harm and some scientific evidence for a cause and effect relation. Furthermore, precautionary measures should be effective, consistent, proportional and not counterproductive. An assessment of their effect should be integrated in the standard decision-models of public health authorities. Moreover, to ensure societal support these considerations should be transparent and open for dialogue. I present two possible conceptions of the precautionary principle. First, it is noticeable that because of the unpredictable nature of zoonotic diseases, public health authorities focus on the idea of ‘precaution as preparedness’. This reactive response leads to difficult trade-offs between human and animal health. I therefore argue that this policy should always be accompanied by a second policy: ‘precaution as prevention’. Addressing the underlying drivers of zoonotic diseases is a necessary condition to justify disease control measures that harm animals and ecosystems on the basis of the precautionary principle. In chapter 5, I elaborate the responsibilities of veterinarians within the One Health framework. Veterinarians are professionally responsible for the health and welfare of the animals under their care. Moreover, society expects veterinarians to safeguard food safety and public health. These societal expectations are sometimes overdemanding. A holistic perspective on One Health offers veterinarians a way out of the dichotomy between public and animal health, that is at the basis of many moral dilemmas in zoonotic disease control. This is explained with the ‘encapsulated health’ argument: the best way to safeguard human health is to promote the health of animals and the environment. In chapter 6, I conclude that before we decide to implement certain disease control measures, an ethic of One Health requires that we choose those interventions that have the least impact on the health of animals and ecosystems, while still effective enough to stop the disease. My research indicates that the contemporary conception of One Health is necessary but insufficient to address moral dilemmas related to emerging zoonotic diseases. A holistic interpretation of the One Health concept confronts us with underlying value conflicts but will ultimately promote human health more than the current anthropocentric conception. (shrink)