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Photo: Greg Nash-Pool/Getty Images

The Centers for Disease Control and Prevention is "not examining" changing its definition for what it means to be fully vaccinated against COVID-19, director Rochelle Walensky said Wednesday.

Driving the news: Walensky had previously said the U.S. "may need to update" its definition after the approval of booster shots.

Be smart: The CDC's website says, "Fully vaccinated persons are those who are ≥14 days post-completion of the primary series of an FDA-authorized COVID-19 vaccine."

What they're saying: "The definition of 'fully vaccinated' is one dose of the Johnson & Johnson vaccine and two doses of the either Pfizer vaccine or the Moderna vaccine, and we're not examining changing that definition anytime at this point," Walensky said.

Go deeper

19 hours ago - Health

Fauci: Omicron variant will "inevitably" be found in U.S.

Photo: Chip Somodevilla/Getty Images

Anthony Fauci, the director of the National Institute of Allergy and Infectious Diseases, cautioned on Sunday that the COVID-19 Omicron variant will "inevitably" be found in the United States.

Driving the news: Fauci, Biden's chief medical adviser, told ABC's George Stephanopoulos on "This Week" that U.S. officials will meet with colleagues from South Africa later on Sunday to try to determine the severity of the cases, as countries scramble to learn more about the variant.

Nov 26, 2021 - Health

Updated data shows Merck antiviral COVID pill less effective

Photo: Paul Weaver/SOPA Images/LightRocket via Getty Images

Merck said Friday updated data from a study on its experimental COVID-19 pill showed the drug is less effective than initially reported.

Driving the news: The drugmaker said molnupiravir reduced the risk of hospitalization or death for patients with mild or moderate COVID-19 by about 30%, based on a study of more than 1,400 adults. Last month, the company said the study showed about 50% efficacy, based on data from 775 patients.

Nov 26, 2021 - Health

U.S. to restrict air travel from 8 countries over new COVID variant concerns

A COVID-19 vaccine is administered. Photo by Joe Raedle/Getty Images

The U.S. will impose new air travel restrictions in response to the Omicron variant, a new COVID strain first detected in South Africa, President Biden announced Friday.

The big picture: Air travel from South Africa, Botswana, Zimbabwe, Namibia, Lesotho, Eswatini, Mozambique and Malawi will be restricted starting on Monday.