People wear facemasks due to the coronavirus pandemic, including one that reminds others of the 6-foot social distancing guideline, amid the ongoing surge in COVID-19 cases in Los Angeles, California on December 15, 2020. (Photo by Frederic J.
BROWN LOS ANGELES - According to findings released by researchers at USC, three out of 10 Los Angeles County residents and nearly half of adults in the U.S.
are not wearing protective face masks when they are in close contact with people who live outside their households.The USC Dornsife Understanding Coronavirus in America Study found that 67% of Los Angeles County residents are likely to wear face masks when in contact with people from other households, and that 63% wear face masks while exercising.