US plans to use real world, trial data to establish when vaccines need to be updated

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US officials plan to use data gathered from people who have already been vaccinated against COVID-19 as well as data from ongoing clinical trials to
determine when and whether current COVID-19 vaccines need to be updated to address viral variants.

Peter Marks, director of the Food and Drug Administration’s Center for Biologics Evaluation and Research, said in a hearing on Wednesday his agency has already started getting data on vaccine safety from people who have been vaccinated.

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Marks said he expects data on the ongoing effectiveness of the vaccines in the next few months.

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