There are multiple definitions:

1. Wetenschappelijk Instituut Volksgezondheid(Belgian Dutch)

   • in België
   • KCE
   • Organizations (scientific), Health care
   • https://www.sciensano.be/en

2. Wuhan Institute of Virology(English)

   • in China
   • COVID-19, NIH
   • Virology
   • https://www.sci…-targeted-trump

3. whole inactivated virus(English)

   • IIV, LAIV, QIV, TIV
   • Vaccination
   • https://doi.org…iro.2017.04.005