PORTLAND, Ore. — With new, more infectious variants of the coronavirus popping up in the U.S., it's more important than ever to not just wear a mask but to wear the right mask. In fact, one expert ...
Every winter, as Delhi’s air thickens with smog, masks return as our go-to protection. They do help filter harmful particulate matter, but poor mask hygiene can ironically do more harm than good. A ...
Paul Hunter consults for the World Health Organization. He receives funding from National Institute for Health Research and has received funding from the World Health Organization and the European ...
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