Birx, the White House Coronavirus Task Force coordinator, said on a call that nearly one-third of the nation is in a COVID-19 hot spot, and things aren’t getting any better as people turn to indoor activities.

“This is a broad surge across every state where it is cooling,” Birx said in audio of the call obtained by CBS News. “… We’re learning from the far north about how dramatic that spread can be, and we do not see yet improvements in Montana, North Dakota, South Dakota or Wisconsin.”

The pandemic will only plateau if “every single person in your states” takes wearing masks, social distancing and hygiene seriously, Birx said, according to audio of the call. She told governors that people must decrease indoor gatherings with family and friends. The goal is to “form a bridge of human behavior change over the next few weeks,” she said.