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    Area of Science:

    • * Bioethics
    • * Animal Research Ethics
    • * Primate Research

    Background:

    • * Animal research, particularly infection challenge studies with nonhuman primates (NHPs), presents significant ethical considerations.
    • * There is a dual perspective: high hopes for saving human lives versus moral concern for primate welfare.
    • * Recent developments include the National Institutes of Health's adoption of recommendations regarding chimpanzee research.

    Purpose of the Study:

    • * To contribute to the ongoing clarification and evolution of ethical standards and regulations for NHP research.
    • * To critically evaluate the justification criteria for NHP infection challenge studies.

    Main Methods:

    • * Ethical analysis and argumentation.
    • * Review of existing literature and regulatory recommendations on NHP research.
    • * Development of a proposed ethical standard for NHP infection challenge studies.

    Main Results:

    • * The authors assert that NHP infection challenge studies require substantial justification.
    • * Studies are not justified by marginal gains in human safety or efficacy unlikely to translate directly to saving lives.
    • * The ethical standard proposed permits NHP suffering and death for human benefit under stringent conditions.

    Conclusions:

    • * The ethical justification for NHP infection challenge studies must be exceptionally high.
    • * A clear ethical framework is needed to balance potential human benefits against the costs to NHPs.
    • * Further discussion is required to justify the proposed ethical standard that allows NHPs to suffer and die for human benefit.