Risk of blood clot from Covid is eight times higher than from AstraZeneca vaccine

The risk of developing a blood clot as a result of contracting Covid-19 is 8 times higher than developing one as a result of the Oxford-AstraZeneca vaccine.

This was found on the basis of a study of 500,000 patients infected with Covid-19, with the risk of a blood clotting being reportedly much higher than with any other type of infection.

Cerebral venous thrombosis (CVT) occurred 39 times in one million cases of Covid-19 patients and only in 5 per million who took the AstraZeneca vaccine.

The UK medicines regulator said AstraZeneca was still effective and safe but has limited use in those under 30 as they run a lower risk of getting sick with Covid-19.

However, the Oxford study suggests that about a third (30%) of reports of thrombosis following Covid-19 infection occurred in patients under 30 years of age.