Advice on whether or not to use face Tube Mask to limit the spread of the pandemic has varied from country to country, even differing by location within countries. These policies have had to balance whether there were sufficient supplies for medical personnel to divert some to the general public. And the whole issue was decided without a clear idea of whether face masks were actually effective against SARS-CoV-2.
But there has been reason to think masks would at least be somewhat effective, based on studies of the spread of droplets of material we expel while coughing or sneezing. And a recent analysis suggested a large group of individual studies collectively pointed to their effectiveness. But that analysis left a large degree of uncertainty about how effective they’d be at the population level and how face Custom Mask use would interact with other policy decisions.
Masks vs virus
Mask use actually has two different functions. To a degree, it limits the ability of people who are infected to put infectious particles into the environment. And to a potentially different degree, it limits access to two of the primary routes by which those particles can reach new hosts: the mouth and … Read the rest