01/13/2023 03:31 PM EST
The CDC and FDA announced on Friday that their surveillance system flagged a possible link between the new Pfizer-BioNTech bivalent Covid-19 vaccine and strokes in people aged 65 and over, but said they were continuing to recommend the shots.
The surveillance “raised a question of whether” stroke risk was elevated in the 21-day period post-vaccination versus 22 to 44 days post-vaccination, according to a statement on the CDC website.
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The real-time surveillance system, CDC’s Vaccine Safety Datalink, met criteria warranting further investigation into whether the bivalent Pfizer vaccine led to a higher risk of ischemic stroke, which occurs when arteries pumping blood to the brain are blocked by a blood clot.
https://www.politico.com/news/2023/01/13/cdc-fda-pfizer-bivalent-vaccine-possible-strokes-00077933
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