COVID-19 Blood Clot Risks Much Higher for Nonvaccinated Patients, Oxford Says

Oxford University researchers have found that the risks of rare blood clots in the brain are significantly higher for COVID-19 patients than for vaccinated individuals.

The risk of cerebral venous thrombosis following COVID-19 infection is approximately “100 times greater than normal, several times higher than it is post-vaccination or following influenza,” the Oxford researchers found in a study of data from more than 500,000 COVID-19 patients.

The study evaluated real-world data on the AstraZeneca/Oxford vaccine, which has been linked to very rare but life-threatening blood clots, as well as the Pfizer/BioNTech and Moderna vaccines.