Booster dose side effects were similar to second dose, with brief, mild-to-moderate effects, study says
CNN
New data suggests booster doses of Covid-19 vaccines were well-tolerated, US Centers for Disease Control and Prevention Director Dr. Rochelle Walensky said Tuesday.
"The frequency and type of side effects were similar to those seen after the second vaccine doses and were mostly mild or moderate and short-lived," Walensky said during a White House Covid-19 briefing on Tuesday, when she described a new study published in CDC's Morbidity and Mortality Weekly Report.
As of September 19, 2.21 million people in the United States have received additional doses of Covid-19 vaccine after their primary series, according to the new report. Among them, 22,191 made reports to CDC's v-safe system, a voluntary, smartphone-based app that lets people report how they feel after they've been vaccinated. The new study includes reports from August 12, when the US Food and Drug Administration OK'd additional doses for certain immunocompromised people, and September 19.
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