Danish study finds no clear evidence face masks protect wearer from Covid-19 infection thelocal.dk/20201118/danis… via @TheLocalDenmark
The study compared how well protected one group of people who used masks were compared with a second group who did not use them. The results of the study were announced in a statement released by Copenhagen’s Rigshospitalet.
It is important to note that the study looked exclusively at the protective effects of masks for the wearer, and not at the wearer’s ability to protect others.
The research project involved two groups totalling 6,000 people, and was conducted in April and May this year, when face mask use was not widespread in Denmark.
During this period, Denmark’s lockdown was still ongoing, with many businesses and public institutions closed.
During this period, Denmark’s lockdown was still ongoing, with many businesses and public institutions closed.
In the non-face mask group, 2.1 percent of participants were infected with new coronavirus, while 1.8 percent of participants in the face mask-wearing group were infected.
That difference is not big enough to conclude with certainty a benefit of using face masks with regard to protecting oneself from infection.
Twitter won’t let me retweet @AlexBerenson’s tweet: 
• • •
Missing some Tweet in this thread? You can try to
force a refresh
