Research on the new coronavirus and how coughs spread suggest the virus can travel further, and linger longer in the air, than previously believed.

So far, the consensus has been that the virus that causes the disease Covid-19 is mostly transmitted through large droplets that are created when people cough, sneeze or talk. That consensus is the foundation for the Centers for Disease Control and Prevention’s recommendation that people wear cloth face masks and stay least 6 feet apart, as well as the World Health Organization’s…

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