White House coronavirus response coordinator Deborah Birx during a July 8 briefing at the U.S. Department of Education in Washington, DC. Photo: Alex Wong/Getty Images)

White House coronavirus response coordinator Deborah Birx told Fox News Wednesday the CDC will put out additional recommendations this week on reopening schools.

Why it matters: The role children play in spreading the novel coronavirus is still not known. Birx said U.S. officials had launched a study of all age groups that she hoped would address this.

"What we need to do, and what we’re really trying to do right now is to really look at what the anti-body levels are already in children under 18. So we're launching a very large Sero survey across all age groups to really understand where has this virus been, who has this infected, who is infectable, and who is transmitting the virus."
— Birx on Fox News
  • Birx said "we know from data today that children do quite well with the virus," but she noted there are "open questions" surrounding whether children under 10 transmit COVID-19 less.
  • A study out of South Korea suggests this is the case, she said. "But I think it really needs to be confirmed here," Birx added, saying she hoped the U.S. study would clarify the matter.

Of note: President Trump said Wednesday he would be "comfortable" with his son and grandchildren returning to school in the fall and claimed that "a lot of people are saying" children don't transmit the virus easily.

  • But the South Korean study Birx referenced found that children and teenagers aged 10 to 19 can spread COVID-19 at least as effectively as adults do.
  • Birx said children with pre-existing conditions "probably should not be in an in school situation where there's active virus circulating."

What's next: Birx told Fox News' Bret Baier school districts needed to plan and be flexible ahead of reopening, with safeguards in place for students and teachers — particularly those with pre-existing conditions who must be accommodated.

  • Some schools are putting up plastic shields and many are providing staff and students with masks, she said.

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The number of COVID-19 cases recorded in the U.S. surpassed 5 million on Sunday morning, per Johns Hopkins data.

The big picture: Presumptive Democratic presidential nominee Joe Biden noted in an emailed statement that 5 million "is more than the entire population of Alabama — or of more than half the states in our union, for that matter," as he blamed President Trump for his handling of the pandemic.

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Australian officials in Victoria announced another 19 deaths from COVID-19 on Monday morning local time, breaking the state and national record set the previous day of 17. Victoria also reported 322 new cases — the lowest in 13 days.

The big picture: Australia was on track to suppress the virus in May, but cases have been spiking in Victoria in recent weeks, where a state of disaster was declared last week, enabling officials to introduce restrictions including a night-time curfew in state capital Melbourne.

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People physically distancing at tables in New York City's Times Square in June. Photo: Johannes Eisele/AFP via Getty Images

New York Gov. Andrew Cuomo (D) announced Sunday 515 people, or 0.78% of those tested, returned a positive reading for COVID-19 the previous day.

Why it matters: It's the lowest single-day positive rate since the start of the pandemic. It's another sign that the state that was once a global coronavirus epicenter is curbing the spread of the virus. "Our daily numbers remain low and steady, despite increasing infection rates across the country, and even in our region," Cuomo said in a statement. "But we must not become complacent: Everyone should continue to wear their masks and socially distance."