Coronavirus disease (COVID-19) technical guidance by WHO Investigation protocol for COVID-19 | Page 9

2.7.4 Prevention of COVID-19 virus infection in investigation personnel All personnel involved in the investigation need to be trained in infection prevention and control procedures (standard contact and droplet precautions, as determined by national or local guidelines). These procedures should include proper hand hygiene and the correct use of surgical masks, if necessary, not only to minimize their own risk of infection when in close contact with individuals with COVID-19 infection, but also to minimize the risk of spread among other participants in the investigation. WHO technical guidance on infection prevention and control specific to COVID-19 can be found on the WHO website. 9