Scientist Discovers What May Cause COVID-19 Vaccine-Linked Blood Clots

An AstraZeneca COVID-19 vaccine is prepared at the local vaccination center as the spread of the coronavirus (COVID-19) continues in Hagen, Germany, on March 19, 2021. Kai Pfaffenbach/Reuters

A German team of researchers this week said they may have discovered what causes rare blood clots in some COVID-19 vaccine recipients.

Rolf Marschalek, a professor at Goethe University in Frankfurt who has been involved in studies looking into the rare clotting condition caused by the Oxford-AstraZeneca vaccine, said his researcher showed the issue may be triggered due to adenovirus vectors.