Fra Nature som er et meget anerkendt tidsskrift:
www.nature.com/articles/d41586-020-02801-8 - uddrag:
"To be clear, the science supports using masks, with recent studies suggesting that they could save lives in different ways: research shows that they cut down the chances of both transmitting and catching the coronavirus, and some studies hint that masks might reduce the severity of infection if people do contract the disease."
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Fra PNAS - også meget anerkendt:
www.pnas.org/content/118/4/e2014564118 - uddrag:
"Our review of the literature offers evidence in favor of widespread mask use as source control to reduce community transmission:"
"We recommend that mask use requirements are implemented by governments"
"Given the value of the source control principle, especially for presymptomatic people, it is not sufficient for only employees to wear masks; customers must wear masks as well."