COVID-19 Testing

Kicks, punches and grunts echoed through the empty arena. Coaches, commentators and camera clicks resonated like never before. Blood, sweat, swollen eyelids and face masks signaled the return of UFC, the first major sporting event to resume since the...

U.S. regulators have approved a new type of coronavirus test that administration officials have promoted as a key to opening the country. The Food and Drug Administration on Saturday announced emergency authorization for antigen tests developed by Quidel Corp. of...