Coronavirus Cases from Unknown Origin Grow

Three new confirmed or presumptive cases of the coronavirus illness COVID-19 contracted from an unknown source were reported Friday, bringing the total number of what could be “community spread” cases in the United States to four, NBC News reports.

Washington Post: “The developments mean the virus is spreading in at least four separate communities — two of them about 90 miles apart in California, and two others farther up the West Coast.”