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CDC Investigates Potential Stroke Risk from Pfizer COVID-19 Booster Shot

The U.S. Centers for Disease Control and Prevention (CDC) investigates a possible stroke risk link for older adults who received an updated Pfizer/BioNTech COVID-19 booster shot.

Tubes and vaccine needle with "Covid-19 Vaccine" written on it
Tubes and vaccine needle with "Covid-19 Vaccine" written on it

New data from one CDC database shows a weaker signal than the agency had flagged earlier in January, but health officials are still looking into the matter.

U.S. Food and Drug Administration officials have not detected a link between the shots and strokes in two other safety monitoring databases. The new data was presented at a meeting of outside experts who advise the FDA on vaccine policy.

CDC, FDA Recommend Older Adults Still Receive COVID-19 Booster Shots

Despite the ongoing investigation, the CDC and FDA still recommend that older adults receive the booster shots, which are now tailored to target Omicron variants and the original coronavirus. Dr. Walid Gellad, professor of medicine at the University of Pittsburgh, said the issue requires further investigation.