More testing sheds light on how virus is spreading in US

An increase in testing for the coronavirus began shedding light Monday on how the illness has spread in the United States, including among nursing home residents in one Washington state facility. U.S. health officials updated the number of COVID-19 cases to 91 in 10 states after Oregon and Illinois announced new diagnoses. Seattle officials announced four more deaths, bringing the total in the U.S. to six.