The surge in COVID-19 cases has been most pronounced in a handful of Southern and Western states that reopened earlier and more aggressively, despite warnings by health officials to wait to see a steady decline in cases.
For a third consecutive day on Saturday, the number of confirmed U.S. cases rose by more than 40,000, one of the largest surges in the world.
In
Arizona, cases have risen by 267% so far in June and jumped by a record 3,857 cases on Sunday, the eighth record-breaking increase this month.