Overview

• Heart attacks and strokes decreased by up to 10% after the first vaccine dose.
• Reductions of up to 27% for AstraZeneca and 20% for Pfizer were observed after the second dose.
• The study confirmed the overall cardiovascular safety of COVID-19 vaccines.
• Rare side effects like myocarditis and blood clots were noted but were outweighed by benefits.
• Researchers used comprehensive health records from nearly the entire adult population of England.