The Trump administration is gambling that a new generation of fast, cheap coronavirus tests can bring the U.S. outbreak under control. The challenge now is getting enough of these tests to pursue that strategy. The rapid antigen tests, which hunt for proteins on the virus’ surface, give results in less than 30 minutes. They are … Continue reading Shortages threaten Trump’s plan for rapid coronavirus tests Manufacturers of antigen tests say they are nowhere near able to meet demand.