Superficial venous thrombosisas a possible consequence of ChAdOx1 nCoV-19 vaccine: two case reports

Highlights/Take-away message 1. The Chimpanzee Adenovirus-vectored Vaccine (ChAdOx1 nCoV-19 vaccine) has been widely used in Himalayan Country, Nepal and India. 2. Apart from other minor side effects, delayed thromboses in superficial vein have been reported after vaccination of ChAdOx1 nCoV-19 vaccine and they may be the consequences of vaccination though larger study is needed to verify them. 3. Superficial vein thrombosis (SVT) should be an additional adverse effect to be mentioned in the list of adverse events associated with ChAdOx1 nCoV-19, Covishield, vaccine. 4. The benefits of the vaccine in breaking the chain of COVID 19 spread are certainly greater than the risk of thromboses.