The Dallas Morning News

Study finds clot risk higher with COVID


The risk of blood clots among those who have been diagnosed with COVID-19 is higher than among those who have received vaccines against the disease, according to a study from the University of Oxford.

COVID-19 patients were found to have a clot risk of 39 in a million, compared with 4 in a million in vaccines developed by Pfizer-biontech or Moderna, and 5 in a million with those who took the Astrazenec­a vaccine. The study suggests that the risk of a clot among those with the disease is eight to 10 times higher than in those receiving a vaccinatio­n.

“All the evidence we have is that risks of COVID are so much greater than whatever the risks of the vaccines might be,” said Paul Harrison, professor of psychiatry at Oxford and a study author.

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