Two studies published by JAMA Cardiology today discuss adverse effects associated with COVID-19 vaccines. The first describes vaccine-induced immune thrombotic thrombocytopenia with cerebral venous sinus thrombosis (VITT with CVST) linked to the AstraZeneca/Oxford and Johnson & Johnson vaccines.
The second is a case series looking at 15 adolescents who experienced myocarditis after receiving the Pfizer/BioNTech vaccine.Despite these risks, both research teams continue to advocate for COVID-19 vaccines as the health risks from the virus are far greater than those linked to the vaccine.
For instance, the VITT study researchers say that CVST risk from COVID-19 infection is 60- to 230-fold higher than the risk derived from COVID-19 vaccination.