Thrombosis and COVID-19 vaccines

Abstract

Vaccines against COVID-19 from Moderna Biotech Spain, SL (COVID-19 Vaccine Moderna – mRNA technology), AstraZeneca (Oxford/Astrazeneca Vaccine - ChAdOx1 - adenovirus vector technology) and Janssen-Cilag International NV (COVID-19 Vaccine) Janssen - Ad.26.COV2.S - adenovirus vector technology) used in Europe, the United States and Brazil has presented severe thrombotic adverse reactions. The recorded thrombosis occurred in unusual sites, such as the sagittal venous sinus.