Enlarge / A medical director in Germany sits in front of a monitor showing the real-time data of a patient with a heart attack. (credit: Getty | Arne Dedert)

A bout of COVID-19 is known to increase a person's long-term risks of having a major cardiovascular event, such as a heart attack or stroke. But being fully vaccinated or even partially vaccinated appears to bring that risk down, according to a study published this week in the Journal of the American College of Cardiology.

The study, led by researchers at Icahn School of Medicine at Mount Sinai in New York, drew on medical records from over 1.9 million patients who were infected with COVID-19 between March 2020 and February 2022. Of those 1.9 million patients, a "major adverse cardiac event," namely a heart attack, stroke, or another cardiac event, was identified in 13,948 patients, and 3,175 died following the event.

Overall, the researchers found that being vaccinated—fully or partially—was linked to fewer cardiac events in the six months following a case of COVID-19. After adjusting for demographics, comorbidities, and time since the pandemic began, the researchers found that being fully vaccinated reduced the risk of having a major cardiac event by about 41 percent, while being partially vaccinated reduced the risk by about 24 percent.