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Two new case studies affirm that cloth face coverings “are a critical tool in the fight against COVID-19 that could reduce the spread of the disease, particularly when used universally within communities,” the Centers for Disease Control and Prevention  yesterday. One , reported in JAMA, found that adherence to universal masking policies for health care workers and patients reduced SARS-CoV-2 transmission within a Boston hospital system. Another , released by CDC, found that wearing a mask prevented the spread of infection from two hair stylists to their customers in Missouri. According to a  released yesterday, the share of Americans who reported wearing a cloth face covering when outside their home rose from 62% in April to 76% in May. 

"Cloth face coverings are one of the most powerful weapons we have to slow and stop the spread of the virus – particularly when used universally within a community setting,” said CDC Director Robert Redfield, M.D.

The AHA, American Medical Association, and American Nurses Association have  the public to help stop the spread of COVID-19 by wearing a face mask, maintaining physical distancing and washing hands.