Claim: The new coronavirus is 400-500 micro and for this reason wide enough to be stopped by masks.
Fact-check: Coronavirus graphics you may have been sent on WhatsApp are not actually from Unicef - Full Fact
Verdict: the virus is 50-200 nanometres wide, and a mask, although sometimes necessary, won't guarantee that you don't get covid-19.
Organisation: Full Fact
Author: Grace Rahman
Date published: 2020-03-11T00:00:00