Instances of stroke following receipt of Pfizer’s new booster in the elderly may be connected to the influenza vaccine, officials said on Jan. 26.
One-hundred thirty cases of ischemic stroke, which can be deadly, were recorded among people aged 65 or older within 21 days of a bivalent Pfizer booster, the FDA’s Vaccines and Related Biological Products Advisory Committee was set to hear on Thursday.
That was higher than the 92 cases recorded in the 22- to 42-day window following vaccination, triggering a safety signal.
The U.S. Centers for Disease Control and Prevention (CDC) and FDA revealed the signal on Jan. 13 but had not said how many cases were recorded from the U.S. government’s Vaccine Safety Datalink surveillance system, which contains records from 12.5 million people across 11 sites….