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WHO convenes experts to identify new pathogens that could spark pandemics

The process will include both scientific and public health criteria, as well as criteria related to socioeconomic impact, access, and equity. The experts will recommend a list of priority pathogens that need further research and investment.  

Essential for quick response 

“Without significant R&D investments prior to the COVID-19 pandemic, it would not have been possible to have safe and effective vaccines developed in record time”, he added.  The priority pathogens list was first published in 2017 and includes COVID-19, Ebola virus disease, Lassa fever, Middle East respiratory syndrome (MERS), Severe Acute Respiratory Syndrome (SARS), Rift Valley fever, Zika, and “Disease X”.  Efforts will also be made to map, compile and facilitate clinical trials to develop these tools. 

Roadmap for research 

The revised list is expected to be published in early 2023.  WHO is convening over 300 scientists who will consider the evidence on over 25 virus families and bacteria, as well as “Disease X”, which indicates an unknown pathogen that could cause a serious international epidemic.  The process began on Friday and will guide global investment, and research and development (R&D), especially in vaccines, tests, and treatments.  Desired specifications for vaccines, treatments and diagnostic tests will also be determined, where relevant.  “Targeting priority pathogens and virus families for research and development of countermeasures is essential for a fast and effective epidemic and pandemic response”, said Dr. Michael Ryan, Executive Director of WHO’s Health Emergencies Programme.  R&D roadmaps will be developed for those pathogens identified as priority, laying out knowledge gaps and areas for research. 


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