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Pfizer to study using booster shot aimed at virus variant

Pfizer and its partner BioNTech said Thursday they are beginning a study to test whether a third shot of their COVID-19 vaccine will help protect against variants of the virus.

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White House coronavirus adviser says vaccine companies plan to update shots to address variants

White House coronavirus adviser official discusses plans by  vaccine companies cope with COVID-19 variants

Andy Slavitt, White House senior adviser on the coronavirus response, said vaccine-producing companies plan to update their shots to address variants of the virus.

During a Washington Post live interview Thursday, he said the Pfizer and Moderna vaccines “work well for” the most prominent variant spreading throughout the United States, which is the one first identified in Britain.

He said that while the vaccines appear less effective against the variants first identified in Brazil and South Africa, they do produce some antibodies.

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Seven U.S. virus variants found with same worry mutation

A new study identifies seven U.S. virus variants with the same worrying mutation.

As Americans anxiously watch the spread of coronavirus variants that were first identified in Britain and South Africa, scientists are finding a number of new variants that seem to have originated in the United States — and many of them may pose the same kind of extra-contagious threat.

In a study posted on Sunday, a team of researchers reported seven growing lineages of the coronavirus, spotted in states across the country. All have gained a mutation at the exact same spot in their genes.

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UK’s Kent virus variant becoming more resistant, could spread, scientists warn

LONDON — The dominant coronavirus variant in the U.K. is becoming more resistant to vaccines, scientific experts have warned.

Two leading scientists in the U.K. warned Wednesday that the variant of the virus first identified in Kent has acquired the same E484K mutation on its spike protein that makes the South Africa variant so worrying for experts.

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WHO expert group recommends use of AstraZeneca vaccine

GENEVA (AP) — Independent experts advising the World Health Organization about immunization on Wednesday recommended the use of AstraZeneca’s vaccine even in countries that turned up worrying coronavirus variants in their populations.

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