Some Americans could need COVID-19 vaccine booster -Fauci - Reuters

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People wear masks around Times Square, as cases of the infectious coronavirus Delta variant continue to rise in New York City, New York, U.S., July 23, 2021. REUTERS/Eduardo Munoz

WASHINGTON, July 25 (Reuters) - Top infectious disease official Anthony Fauci said on Sunday that Americans who are immune compromised may end up needing COVID-19 vaccine booster shots as the United States deals with increasing cases from the Delta variant of the coronavirus.

"Those who are transplant patients, cancer chemotherapy, auto-immune diseases, that are on immunosuppressant regimens, those are the kind of individuals that if there's going to be a third booster, which might likely happen, would be among first the vulnerable," Fauci said during a CNN interview.

He added health officials are also considering whether to revise mask guidance for vaccinated Americans saying it was "under active consideration."

Citing studies that show there might be waning immunity in vaccinated people, Fauci said U.S. health officials are reviewing data to determine when boosters might be needed.

“It’s a dynamic situation. It’s a work in progress, it evolves like in so many other areas of the pandemic,” said Fauci, the director of the National Institute of Allergy and Infectious Diseases. “You’ve got to look at the data.”

Last week, Israel's health ministry reported a decrease in the effectiveness of the Pfizer (PFE.N) vaccine in preventing infections and symptomatic illness. But it added that the two-dose COVID-19 vaccine developed by Pfizer with partner BioNTech (22UAy.DE) still remained highly effective in preventing severe illness.

The decline in efficacy coincided with the spread of the Delta variant, now the dominant strain in Israel.

Israel is administering third doses of the vaccine to immunocompromised people, including those who have had heart, lung, kidney or liver transplants and cancer patients receiving chemotherapy.

The Delta variant, which was first found in India, is driving up infections in the United States.

The sharpest increases in COVID-19 cases are in places with lower vaccination rates. Florida, Texas and Missouri account for 40% of all new cases nationwide, with around one in five of all new U.S. cases occurring in Florida, White House adviser Jeffrey Zients said last week.

Pfizer and BioNTech said on Friday that the United States had purchased 200 million more doses of their vaccine to help with pediatric vaccination as well as possible booster shots. read more

Reporting by Linda So; Editing by Tim Ahmann and Grant McCool

Our Standards: The Thomson Reuters Trust Principles.

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