The evidence, compiled by federal scientists over the past several months, showed a decline in the initial round of protection against Covid-19 infection that’s coincided with a resurgence in cases driven by the more contagious Delta variant. The data looked at vaccine effectiveness in individuals across age groups, with varying medical conditions and who received the shot at different times. It was presented to White House Covid-19 task force officials at a meeting Sunday.
‘This is what moved the needle,’ one senior administration official said, describing the CDC data and the decision to urge boosters.
That data — which is set to be made public later this week — brought a swift end to a debate over when to administer boosters that has raged within the administration for months, and spurred the buildout of a plan for distributing the additional shots in a matter of weeks.
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