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AstraZeneca, Pfizer, and rare blood clots

Share on PinterestDo COVID-19 vaccines increase blood clot risk? HANNIBAL HANSCHKE/Getty Images Two large studies have found a small increase in the absolute risk of rare types of blood clot in the head following a first dose of the AstraZeneca COVID-19 vaccine. An increased risk of a type called intracranial venous thrombosis only applied to […]