F.D.A. Extends Shelf Life of J.&J. Shots by Six Weeks

The move gives states extra time to figure out how to use up supply of the single-dose vaccine, even as local officials have struggled to use up stockpiles of the shot, which has lately faced sagging demand.The move gives states extra time to figure out how to use up supply of the single-dose vaccine, even as local officials have struggled to use up stockpiles of the shot, which has lately faced sagging demand.

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