Read on Twitter
if the 
Deputy Chief Medical Officer is wearing a (self-purchased?) KN95 respirator when he goes into an indoor vaccination centre, maybe your gran should be wearing proper respiratory protection too?
Deputy Chief Medical Officer is wearing a (self-purchased?) KN95 respirator when he goes into an indoor vaccination centre, maybe your gran should be wearing proper respiratory protection too?
FFP2 masks are the EU equivalent of the USA N95 standard
the difference from a cotton or surgical mark is that they filter all the air you breathe, not just some of it
studies show that even this isn’t perfect protection from virus aerosols, but it’s a lot better
the difference from a cotton or surgical mark is that they filter all the air you breathe, not just some of it
studies show that even this isn’t perfect protection from virus aerosols, but it’s a lot better
to be sure of getting the right quality, you need to buy FFP2 or FFP3 masks made in the UK or EU and they *shouldn’t* have an expiratory valve
practice fitting and wearing them first, as getting a seal around the face is really important, men need to shave too!
practice fitting and wearing them first, as getting a seal around the face is really important, men need to shave too!
this Japanese study measured the effectiveness of different combinations among masks at reducing viral dose in airborne spread, and supports the recommendation to use N95 / FFP2 level masks for additional protection https://msphere.asm.org/content/5/5/e00637-20
