Tom Frieden, former director of the Centers for Disease Control and Prevention, told "Fox News Sunday" that the new surge in coronavirus cases is the result of states lifting their lockdown measures too quickly.

Why it matters: Florida, Arizona, Georgia, South Carolina and Nevada reported new daily coronavirus case records on Saturday, while the country as a whole reported more than 45,000 new cases on June 26 alone, according to Johns Hopkins University data.

What they're saying: "If you open when cases are still increasing, as many states did, it's like leaning into a left hook," Frieden said. "You're going to get hit hard, and that's what's happening."

  • "When we see Arizona, Texas, Florida, South Carolina — they are currently in a rapid upswing. And, sad to say, this is going to continue to get worse for weeks because the physical distancing that they're implementing now will only take effect — you don't see it for another few weeks. So we're going to see a few more weeks of increases, in all likelihood, in several states."
  • "We're going to see increasing spread. That's why the three W's are so important: wear a mask, wash your hands — or use sanitizer — and watch your distance."

The big picture: Frieden said there's a misconception that there's a silver lining in the fact that younger people account for more of the new cases.

  • "Now there's some comfort in the fact that it's younger people, but what starts in the young doesn't stay in the young," Frieden said.
  • Texas, one of the early states to roll back its lockdown measures, is now urging its citizens to stay at home again as cases begin to climb.

Go deeper: CDC expands list of who's most at risk for the coronavirus

Go deeper

Coronavirus cases rise in 22 states

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Data: The COVID Tracking Project, state health departments; Note: Texas added a backlog of cases on Sept. 22, removing that from the 7-day average Texas' cases increased 28.3%; Map: Andrew Witherspoon, Sara Wise/Axios

The coronavirus is surging once again across the U.S., with cases rising in 22 states over the past week.

The big picture: There isn't one big event or sudden occurrence that explains this increase. We simply have never done a very good job containing the virus, despite losing 200,000 lives in just the past six months, and this is what that persistent failure looks like.

Caitlin Owens, author of Vitals
18 hours ago - Health

Where bringing students back to school is most risky

Data: Coders Against COVID; Note: Rhode Island and Puerto Rico did not meet minimum testing thresholds for analysis. Values may not add to 100% due to rounding; Cartogram: Andrew Witherspoon/Axios

Schools in Southern and Midwestern states are most at risk of coronavirus transmission, according to an analysis by Coders Against COVID that uses risk indicators developed by the Centers for Disease Control and Prevention.

The big picture: Thankfully, schools have not yet become coronavirus hotspots, the Washington Post reported this week, and rates of infection are lower than in the surrounding communities. But that doesn't mean schools are in the clear, especially heading into winter.

18 hours ago - Health

Young people accounted for 20% of coronavirus cases this summer

Hundreds of beachgoers pack in without social distancing in July. Photo: Matthew J. Lee/The Boston Globe via Getty Images

People in their 20s accounted for more than 20% of all COVID-19 cases between June and August, analysis from the Centers for Disease Control and Prevention shows, bringing the median age of coronavirus patients to 37, down from 46 in the spring.

Why it matters: Young people are less vulnerable to serious illness, but they contributed to community spread over the summer, the analysis says — meaning they likely infected older, higher-risk people, especially in the South.