At least 16 states have halted their reopening plans in response to a surge in new infections, but some health officials say the spread of coronavirus will be difficult to control.
Meanwhile, at least 36 states are seeing a rise in new coronavirus cases compared to last week. At least 11 states are seeing a 50% or more rise in cases.
The virus has been especially rampant in Arizona, and the state is closing bars, gyms and other businesses for another 30 days as a precaution. In Florida, some jurisdictions are requiring the use of face masks, including in Jacksonville, where President Trump is expected to accept the Republican presidential nomination in less than two months.
"What we hope is we can take it seriously and slow the transmission in these places," said Dr. Anne Schuchat, the principal deputy director of the US Centers for Disease Control and Prevention. "But what I think is very discouraging is we're clearly not at a point where there's so little virus being spread that it's going to be easy to snuff out."
The US has reported more than 2.5 million cases of the virus and at least 126,140 deaths, according to Johns Hopkins University. State and local leaders have said the rise in cases are in part driven by gatherings, both in homes and in places like bars — which some experts called the perfect breeding ground for the virus.
Here's where cases are increasing across the US: