Cloth masks really do work. Plus, can I catch COVID-19 twice?

Will we ever get enough contact tracers and tests to help slow the spread of the virus?  One doctor explains why cloth masks really do work to protect you.  Immunity might not last very long.  A 94-year-old "Rosie the Riveter"  made bombers in WWII and is now helping her country in a different way.  See omnystudio.com/policies/listener for privacy information.

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