"...CDC recommends wearing cloth face coverings in public settings where other social distancing measures are difficult to maintain (e.g., grocery stores and pharmacies) especially in areas of significant community-based transmission.

CENTERS FOR DISEASE CONTROL AND PREVENTION (April 3, 2020)

"The better part of valor when you're out and you can't maintain that six-foot distance is to wear some sort of facial covering." 

DR. ANTHONY FAUCI | WHITE HOUSE CORONAVIRUS TASK FORCE