A Danish study that included more than 6,000 people found that wearing a mask provided only limited protection against COVID-19 infection. The authors didn’t suggest that people not wear masks, but said they couldn’t rule out that masks don’t provide any protection, either.
After one month of a one group wearing masks and the others not, 1.8% of the mask wearers were infected whereas 2.1% of those not wearing masks tested positive.
A press release from the Copenhagen University Hospital said:
“The study does not confirm the expected halving of the risk of infection for people wearing face masks. The results could indicate a more moderate degree of protection of 15-20%, however, the study could not rule out that face masks do not provide any protection.”
The findings aren’t that surprising as health professionals have long said that wearing a mask does little to protect the wearer, but can provide a little protection from the mask wearer infecting others.