Can mouth shields replace cloth masks? Mask questions continue to be a major theme in our inbox, but this week, a bunch of you are writing to ask us about mouth shields. But because mouth shields are not tight fitting and are open at the top, Hota said, there are "lots of opportunities for droplets to get in." Colin Furness, an infection control epidemiologist and assistant professor at the University of Toronto, also said he's "not a fan" because mouth shields don't collect droplets like a mask would. Instead, he explained, the droplets are just forced sideways around the shield.

Source: CBC News August 29, 2020 07:52 UTC