Health May 09

The headquarters of the U.S. Food and Drug Administration (FDA) is shown in Silver Spring, Maryland, November 4, 2009. Photo by Jason Reed/Reuters
US approves new coronavirus antigen test with fast results

The Food and Drug Administration on Saturday announced emergency authorization for antigen tests developed by Quidel Corp. of San Diego. The test can rapidly detect fragments of virus proteins in samples collected from swabs swiped inside the nasal cavity, the…