U.S. FDA, CDC see early signal of possible Pfizer bivalent COVID shot link to stroke
January 17, 2023
Jan 13 (Reuters) - (This Jan. 13 story has been refiled with an edited headline to clarify that the link to a stroke is possible, not definite.)
A safety monitoring system flagged that U.S. drugmaker Pfizer Inc (PFE.N) and German partner BioNTech's updated COVID-19 shot could be linked to a type of brain stroke in older adults, according to preliminary data analyzed by U.S. health authorities.
The U.S. Centers for Disease Control and Prevention (CDC) and the Food and Drug Administration (FDA) said on Friday that a CDC vaccine database had uncovered a possible safety issue in which people 65 and older were more likely to have an ischemic stroke 21 days after receiving the Pfizer/BioNTech bivalent shot, compared with days 22-44.