claim: no, a cdc-who study does not prove that masks do not prevent spread of covid-19
summary: a video on facebook falsely claimed that a cdc-who study proved that masks do not prevent the spread of covid-19. the study was actually related to influenza, and the claim was false
subject_description: says a cdc-who study “proves face masks do not prevent the spread of a virus.”
Motive_Description: claim masks are not effective in preventing covid-19
author_description: general public
keywords: coronavirus, cdc, who, study, mask, spread