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Researchers now plan to connect the survey responses with biological data, such as blood samples and scans, to delve into the causes of these symptoms. Reinfection and severity of infection were also linked to a higher incidence of long COVID, according to the study, published Thursday in the Journal of the American Medical Association. The survey of nearly 10,000 Americans found long COVID is more common among people infected before the emergence of the omicron variant in late 2021 and among those who had not been vaccinated. It's possible that long COVID has different causes in different people, or that some people are affected by a combination of factors. It's not yet clear from this study whether people with long COVID can be classified into different groups according to their symptoms, Horwitz said, though other research has tried to do that.

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But just because someone no longer meets this standard doesn't mean they are free from suffering or fully recovered, Horwitz noted. More than 20% of people who've had COVID score high enough six months after their infection to meet this working definition of long COVID, although one-third of them no longer meet the criteria at nine months. It just means that these are the ones that help us identify people who have long-term consequences.' 'It doesn't mean these symptoms are the most common, or the most severe, or the most burdensome, or the most important to people.

Leora Horwitz, who helped lead the research from the New York University Grossman School of Medicine. In a new study funded by the National Institutes of Health, researchers identified symptoms that are the most distinctive to long COVID, including: fatigue, especially after exercise brain fog dizziness gastrointestinal symptoms heart palpitations issues with sexual desire or capacity loss of smell or taste thirst chronic cough chest pain and abnormal movements.Įach self-reported symptom is given a score and someone with a score of 12 or more 'is a person who very likely has long COVID,' said Dr. A clearer picture of what's become known as long COVID-19 is starting to emerge, which should eventually allow researchers to treat symptoms that can devastate people's lives for months or years after a COVID-19 infection.