Does your face mask have vents or valves? The Centers for Disease Control and Prevention (CDC) recently updated its guidelines advising Americans to avoid such face masks, as they aren’t as effective in preventing the spread of COVID-19. CLICK HERE FOR COMPLETE CORONAVIRUS COVERAGE“The purpose of masks is to keep respiratory droplets from reaching others to aid with source control. Masks with one-way valves or vents allow exhaled air to be expelled out through holes in the material. Valved N95 masks are not typically used in a medical setting, though they are said to make breathing easier, according to a 2008 study on the masks.

Source: Fox News August 10, 2020 16:54 UTC