CVT - Blood clot risk higher from COVID-19 than from vaccines

New research from the University of Oxford finds that the risk of developing blood clots is higher from COVID-19 itself than from vaccines given to prevent it.Researchers say that developing rare blood clots known as cerebral venous thrombosis (CVT) is 100 times greater than normal following COVID-19 infection and is several times higher following a COVID-19 vaccine or following influenza.Compared to the mRNA vaccines, the risk of a CVT from COVID-19 is about 10 times greater.The Pfizer (PFE +1.1%) and Moderna (MRNA -0.7%) vaccines are mRNA vaccines. In over 480,000 people receiving a COVID-19 mRNA vaccine (Pfizer or Moderna), CVT occurred in four in a million, the researchers reported.Compared to the AstraZeneca (AZN +2.1%) vaccine, the risk of a CVT from COVID-19 is about eight times greater. CVT has been reported to occur in about five in a million people after the first dose of the AstraZeneca dose.The Johnson & Johnson (JNJ +0.6%) vaccine, which is

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Blood clot risk higher from COVID-19 than from vaccines