Texas and Florida have drawn attention, but the virus is surging in Alabama, Louisiana and Mississippi, too.
Trump cancels the Florida portion of Republican National Convention.
The U.S. passes four million known cases, as hospitalizations and deaths rise.
Draft Republican virus aid proposal reflects significant retreat by White House on tax cuts, testing and schools.
A Washington Nationals star is pulled from baseball’s season opener after testing positive.
U.S. testing continues to falter with more shortages in lab equipment.
Another study finds that the drug hydroxychloroquine didn’t help Covid-19 patients.
