U.S. FDA, CDC see early signal of possible Pfizer bivalent COVID shot link to stroke

U.S. FDA, CDC see early signal of possible Pfizer bivalent COVID shot link to stroke

Source: 
Yahoo/Reuters
snippet: 

A safety monitoring system flagged that U.S. drugmaker Pfizer Inc 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.