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A person gets a COVID-19 test outside The Late Show with Stephen Colbert at the Ed Sullivan Theater in New York City. Photo: Noam Galai/Getty Images

The Centers for Disease Control and Prevention has revised its COVID-19 testing guidance for fully vaccinated people, recommending tests after exposure even if they don't show any symptoms.

Flashback: The agency previously said that fully vaccinated people did not need tests after coming into contact with an infected person unless they experienced symptoms.

Driving the news: The new testing guidelines came the same day that the CDC said those who are fully vaccinated should wear masks indoors in certain areas of the U.S. that have substantial or high virus transmission.

  • The agency also clarified that masks should be used regardless of the level of the level of transmission "if you have a weakened immune system or if, because of your age or an underlying medical condition, you are at increased risk for severe disease, or if a member of your household has a weakened immune system."
  • CDC Director Rochelle Walensky clarified that the change was prompted by new data that suggests "that even vaccinated people who are infected by Delta may carry large amounts of the virus and transmit it to others," the New York Times writes.

What they're saying: "If you’ve been around someone who has COVID-19, you should get tested 3-5 days after your exposure, even if you don’t have symptoms," per the CDC's updated recommendation.

  • "You should also wear a mask indoors in public for 14 days following exposure or until your test result is negative. You should isolate for 10 days if your test result is positive."

Go deeper

COVID cases fall by 20%

Expand chart
Data: N.Y. Times; Cartogram: Kavya Beheraj/Axios

The number of new COVID-19 cases continues to plummet all across the U.S.

By the numbers: The U.S. is now averaging roughly 70,000 new cases per day, a 20% drop over the past two weeks.

WHO: Europe is again at epicenter of pandemic

World Health Organization European director Hans Kluge. Photo: Riccardo De Luca/Anadolu Agency via Getty Images

Europe is "back at the epicenter of the pandemic" and approaching record COVID-19 case numbers as the Delta variant spreads and vaccination efforts stall in several regions, a top World Health Organization official warned Thursday.

The big picture: Germany reported Thursday its highest number of new coronavirus infections in one day since the pandemic began (33,949). New cases across Europe have risen 55% in the past four weeks, per WHO European director Hans Kluge. "We are at another critical point of pandemic resurgence," he warned.

Nov 5, 2021 - Health

DeSantis to sue Biden administration over employer vaccine mandate

Florida Gov. Ron DeSantis. Photo: Paul Hennessy/SOPA Images/LightRocket via Getty Images

Florida Gov. Ron DeSantis announced Thursday that the state will file a lawsuit in response to President Biden's vaccine mandate that goes into effect Jan. 4.

Why it matters: Thursday's lawsuit is the Republican governor's latest attempt to undermine the Biden administration's vaccine requirements.

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