Drivers wait to be tested for the coronavirus in the Hard Rock Stadium parking lot on Monday in Miami Gardens. Florida has seen its caseload soar past 10,000 per day and 200,000 overall. (Joe Raedle/Getty Images)

The pandemic map of the United States burned bright red Monday, with the number of new coronavirus infections during the first six days of July nearing 300,000 as more states and cities moved to reimpose shutdown orders.

After an Independence Day weekend that attracted large crowds to fireworks displays and produced scenes of Americans drinking and partying without masks, health officials warned of hospitals running out of space and infection spreading rampantly. The United States is “still knee deep in the first wave” of the pandemic, Anthony S. Fauci, the director of the National Institute of Allergy and Infectious Diseases, said Monday.