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Illustration: Eniola Odetunde/Axios

Influenza cases and other common viruses have been at historically low numbers for the past year due to the safety precautions taken by the public to stifle the spread of COVID-19. But that could change soon.

Driving the news: Experts say the last year and a half, we've largely gone without "boosts" to our adaptive immunity from exposure to viruses, as STAT News reported recently. And if flu cases start to rise in the fall, buckle up.

What they're saying: If the U.S. starts seeing the uptick in flu cases in October or November, "that would be a sign that we’re going to be in for ... a strong flu season," said Andy Pekosz, professor of Molecular Microbiology and Immunology at the Johns Hopkins Bloomberg School of Public Health.

  • A typical flu season begins in late December, early January.
  • "You’ve lost one pathway to immunity, which is natural infection," last flu season, said Ryan Langlois, associate professor in the microbiology and immunology department at the University of Minnesota. "We’ve never been in this situation."

State of play: Already, cases of respiratory syncytial virus, or RSV, have surged across the country in recent weeks for the first time since the pandemic started as the country started to open back up.

What to watch: Last year's flu vaccination rates were the highest seen in years. If we see an early flu season, the public health guidance to get the flu vaccine will be that much more important and, in some cases, it may make sense to ask individuals who are high-risk to wear masks, Langlois said.

Go deeper

3,000 unruly passenger reports made to FAA this year

Photo: Stefani Reynolds/Bloomberg via Getty Images

Airlines have reported some 3,000 cases of unruly behavior by passengers to the Federal Aviation Administration this year — including 2,300 for refusing to comply with face mask mandates, the FAA announced Monday.

Why it matters: Passenger numbers remain below pre-pandemic levels. But the FAA is investigating the highest number of suspected federal law violations since it began recording unruly passenger incidents in 1995, per ABC News.

House panel to investigate Trump-era DOJ data seizures

Photo: James Devaney via Getty Images

The House Judiciary Committee will launch a formal probe into the Trump-era Justice Department's seizure of data from devices belonging to members of Congress, their aides, journalists and then-White House counsel, panel chair Jerry Nadler (D-N.Y.) announced Monday.

Why it matters: Though it's so far unclear if the cases are related, they raise "serious constitutional and separation of power concerns," Nadler said in a statement.

3 hours ago - Politics & Policy

Scoop: Inside Biden's Putin prep

Photo illustration: Aïda Amer/Axios. Photo: Leon Neal (WPA Pool)/Getty Images

President Biden assembled a group of outside Russia experts — including former Trump officials — to brief him for his summit with President Vladimir Putin, people familiar with the matter tell Axios.

Why it matters: The previously unreported session demonstrates the extent to which Biden wants to be well prepared, drawing on the experience of officials with first-hand knowledge of the onetime KGB colonel’s tactics and tricks.