About 10 per cent of people appear to suffer long COVID after an Omicron infection, a lower estimate than earlier in the pandemic, according to a study of nearly 10,000 Americans that aims to help unravel the mysterious condition.
Early findings from the National Institutes of Health's study highlight a dozen symptoms that most distinguish long COVID, the catchall term for the sometimes debilitating health problems that can last for months or years after even a mild case of COVID-19.
The new research, published Thursday in the Journal of the American Medical Association, includes more than 8,600 adults who had COVID-19 at different points in the pandemic, comparing them to another 1,100 who hadn't been infected. But about 2,230 patients had their first coronavirus infection after the study started, allowing them to report symptoms in real time --- and only about 10 per cent experienced long-term symptoms after six months.
The researchers assigned scores to the symptoms, seeking to establish a threshold that eventually could help ensure similar patients are enrolled in studies of possible long COVID treatments, as part of the NIH study or elsewhere, for apples-to-apples comparison.
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