FILE - In this Wednesday, July 7, 2021, file photo, patrons enjoy cold tropical cocktails in the tiny interior of the Tiki-Ti bar as it reopens on Sunset Boulevard in Los Angeles. COVID-19 cases have doubled over the past three weeks, driven by the fast-spreading delta variant, lagging vaccination rates in some states and Fourth of July gatherings. Los Angeles County public health officials have urged people to resume wearing masks indoors regardless of their vaccination status. (AP Photo/Damian Dovarganes, File)
(AP)–New COVID-19 cases per day in the U.S. have doubled over the past three weeks, driven by the fast-spreading delta variant, lagging vaccination rates and Fourth of July gatherings.
Infections jumped to an average of about 23,600 a day on Monday, up from 11,300 on June 23. And all but two states — Maine and South Dakota — reported that case numbers have risen over the past two weeks. Some parts of the country are running up against deep vaccine resistance.