It’s now abundantly clear that face masks are an important and effective tool in preventing the spread of COVID-19. But as it turns out, some are more effective than others.
, there was a lot more variability in the effectiveness of these masks, so it’s hard to tell if one is genuinely the worst or if they’re all just equally bad in this specific test.
There were some other issues with the study as well, which the researchers noted. For instance, the testing apparatus only measured the droplets coming from a small portion of space directly in front of the speaker’s mouth. It didn’t measure the amount of droplets released from the sides of the mask. The study also only used a few different speakers at a set volume to test the masks, so you might see different results from different people or from people who are yelling, singing, or coughing.
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