Covid-19 could be a powerful risk factor for heart attacks and strokes for as long as three years after an infection, a large new study suggests.
The study was published Wednesday in the medical journal Atherosclerosis, Thrombosis, and Vascular Biology. It relied on medical records from roughly a quarter of a million people who were enrolled in a large database called the UK Biobank.
Within this dataset, researchers identified more than 11,000 people who had a positive lab test for Covid-19 documented in their medical records in 2020; nearly 3,000 of them had been hospitalized for their infections. They compared these groups with more than 222,000 others in the same database who didn’t have a history of Covid-19 over the same time frame.
People who caught Covid in 2020, before there were vaccines to blunt the infection, had twice the risk of a major cardiac event like a heart attack or stroke or death for almost three years after their illness, compared with the people who didn’t test positive, the study found.
If a person had been hospitalized for their infection, pointing to a more severe case, the risk of a major heart event in was even greater – more than three times higher – than for people without Covid in their medical records.
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