An article in PLOS ONE provides a useful masking hierarchy:
All types of masks reduced aerosol exposure, relatively stable over time, unaffected by duration of wear or type of activity, but with a high degree of individual variation. Personal respirators were more efficient than surgical masks, which were more efficient than home-made masks. Regardless of mask [...]
For the learned germophobic
July 12th, 2008 No Comments
Tags: masks · plosone · public health · Science