Week InReview: August 7, 2020

Not all face masks are created equal.
Face masks are a simple way to help prevent the spread of Covid-19 through talking, coughing or sneezing. But they need to be worn properly. While some types of masks are more effective than others, any face covering — even a bandana — is better than nothing. Here's how different types of masks stack up, and how they are meant to be used.
— The Wall Street Journal

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