Coronavirus Live Updates: Testing in the U.S. Becomes Major Campaign Issue

Reporting was contributed by Karen Barrow, Scott Cacciola, Patricia Cohen, Catie Edmondson,David Gelles, Erica L. Green, Apoorva Mandavilli, Jennifer Medina, Nadja Popovich, Margot Sanger-Katz, Anna Schaverien, Kaly Soto, Jim Tanksersley and