There were 3 influenza pandemics in the 20th century, and there has been 1 so far in the 21st century. Analysis of studies from 1946-2018 conclude that there is no significant reduction of influenza transmission with the use of face masks.
There were 3 influenza pandemics in the 20th century, and there has been 1 so far in the 21st century. Analysis of studies from 1946-2018 conclude that there is no significant reduction of influenza transmission with the use of face masks.
){kind=link}