There is a slightly elevated risk of intracranial thrombosis events following vaccination with the AstraZeneca ChAdOx1-S COVID vaccine, according to two new studies publishing February 22nd in PLOS Medicine. The first paper, by William Whiteley of the University of Edinburgh, UK, and colleagues from the BHF Data Science Centre, UK, analyzed the electronic health records of 46 million adults in England. The second paper, by Steven Kerr of the University of Edinburgh, UK, and colleagues, used a dataset of 11 million adults in England, Scotland, and Wales.
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