2 ms·
The question then in context become if mask helps during those 2-3 days before symptoms appear. There is a few links above that links to the effectiveness again
by belorn 7y ago
The question then in context become if mask helps during those 2-3 days before symptoms appear. There is a few links above that links to the effectiveness against coughing and sneezing, but I would guess those are symptoms.
- timr 7y agoNobody knows. We know that "real" masks (i.e. n95 or better) are effective when worn properly, but many people don't wear them properly. The evidence for effectiveness of other kinds of masks in the prevention of virus transmission is weak, at best.