Federal health officials are expected Wednesday to present evidence for why people are likely to need COVID-19 boosters eight months after their second doses of a vaccine, according to sources with the Centers for Disease Control and Prevention.
The eight-month time frame is most likely based on findings from both the U.S. and abroad looking at how the vaccines have held up over time — and whether they can stand up to the hypertransmissible delta variant of the coronavirus that has overtaken the country.
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“Delta is forcing this discussion” on boosters, said Dr. Colleen Kraft, associate chief medical officer at Emory University Hospital in Atlanta.
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Limited research from Israel, one of the first countries to begin widespread vaccination, which has almost exclusively used the vaccine from Pfizer-BioNTech, is likely to have played a role in the administration's expected rollout of timing for booster doses, doctors said.
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