Blood clot risk greater after Covid infection than after vaccination

Analysis of 29m people finds danger of infection with Sars-Cov-2 far outweighs the risks of having jab

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The chances of developing dangerous blood clots after being infected with the virus that causes Covid-19 far outweighs the risks of the AstraZeneca and Pfizer vaccines, according to the largest study of its kind.

The sweeping analysis used data from more than 29 million people in England to compare both vaccines with infection from Sars-Cov-2. It weighed up rates of hospital admission or death from blood clots, as well as other blood disorders, within 28 days of either a positive test or receiving the first jab.