Comment Why not Three? (Score 1) 322
The fact is one properly worn N95 mask will work. Or one surgical mask.
Provided that the person wearing the mask does not continue to touch and adjust the face mask without washing and disinfecting the hands first.
Infectious disease control works if you follow all the PPE rules all the time.
.
https://www.ijidonline.com/art...
.
Context is everything.
.