"Increased risk of heart attack and stroke after COVID-19 infection"

Research has shown that the risk of heart attack and stroke may increase after being infected with the COVID-19 virus.

Researchers analyzed the medical records of 250,000 people enrolled in the UK's Biobank and found that those who were confirmed to have COVID-19 in 2020, when the vaccine was not yet developed, had twice as much risk of developing major heart diseases as those who had not.

In particular, the risk tripled when hospitalized with COVID-19.

The researchers also found that among those hospitalized with COVID-19, blood type O was not at as high risk of heart attack or stroke as type A, type B, and type AB.

However, he added that it is not clear exactly why this difference appears.