Coronavirus science | Week in review: Face mask redesigned, recovery, and retesting after infection – Health24

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READ | Researchers upgrade face masks to improve both comfort and protection
As Covid-19 spreads and masks become mandatory in many more parts of the world, there have been plenty of debates about which types of masks are most effective. The valve mask, for example, provides comfort, but it doesn’t protect other people against droplets that escape through the vents. Some prefer masks with elastic bands that loop around the ears, while others prefer simple cotton buf…

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