Why wear face masks in public? Here’s what the research shows

People have resorted to using scarves and bandanas as face masks to protect against spreading coronavirus. While cloth masks aren’t as effective as surgical masks, research suggests they can limit the spread of droplets.Jens Schleuter/Getty ImagesWith the coronavirus pandemic quickly spreading, U.S. health officials have changed their advice on face masks and now recommendpeople wear cloth masks in public areas where social distancing can be difficult, such as grocery stores.But can these masks be effective?President Donald Trump, in announcingthe change in the Centers for Disease Control and …

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