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    WHO issues new guidance for research on genetically modified mosquitoes to fight malaria and other vector-borne diseases

    20 May 2021

    WHO issues new guidance for research on genetically modified mosquitoes to fight malaria and other vector-borne diseases

    Hello Vector Control Colleagues!

    New guidance from the World Health Organization (WHO) sets essential standards to inform future research and development on genetically modified mosquitoes, particularly in addressing issues relating to ethics, safety, affordability, and effectiveness.
    Malaria and other vector-borne diseases, including dengue and Zika, affect millions globally. More than 400 000 people a year die from malaria alone. If proven safe, effective, and affordable, genetically modified vector mosquitoes could be a valuable new tool to fight these diseases and eliminate their enormous health, social and economic burden.
    The guidance framework for testing genetically modified mosquitoes, developed in partnership with TDR, the Special Programme for Research and Training in Tropical Diseases, and the GeneConvene Global Collaborative, an initiative of the Foundation for the National Institutes of Health, describes best practices to ensure that the study and evaluation of genetically modified mosquitoes as public health tools is safe, ethical and rigorous.
    Current strategies for limiting transmission of mosquito-borne diseases are only partially effective. New, complementary approaches are needed to close the gaps in current vector control interventions, such as effective control of outdoor biting, and to provide alternatives to manage the increasing threat of insecticide resistance. Research suggests genetically modified mosquitoes could be a powerful and cost-effective tool to supplement existing interventions. 
    The new guidance addresses specific questions and challenges associated with research and development on genetically modified mosquitoes, including standards for decision-making about how and when testing should proceed. By establishing a common set of expectations that is specific to genetically modified mosquitoes, the new resource will enable more informed and rigorous evaluation by researchers, developers, those responsible for regulatory and policy decisions, and the people to whom these stakeholders are accountable. 
    The guidance builds on an earlier document published by TDR and FNIH in 2014, incorporating the latest scientific advancements related to genetic modification of mosquitoes, as well as other key updates and learnings related to safety and ethics, including:
    1. Methods for understanding the implications of genetically modified mosquitoes for human health, animal health and the environment;
    2. Increased understanding of the most effective strategies for risk assessment and stakeholder engagement;
    3. Clearer criteria for projects to proceed from one testing phase to the next, incorporating descriptions of the steps needed to safely and responsibly take genetically modified mosquito technologies – including those incorporating gene drive – into the field; and
    4. A concrete set of safety and efficacy considerations that should be evaluated at each phase of testing, to inform decisions about further testing and implementation.