We know that masks work in helping to slow the spread of COVID-19. But now we’re finding out a little about what makes them work best, how they should fit, and how many layers — and what kind — we need to most effectively protect against the coronavirus.
A new study by an airborne disease expert at Virginia Tech shows that three layers work better than two, fit matters, and if worn properly, masks protect wearers and those around them.
New York Times health writer and author Tara Parker-Pope writes about it in her recent article and joins host Robin Young to share the details.
This article was originally published on WBUR.org.
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