Researchers analyzed data from over 200,000 people to determine how common Long COVID is following a SARS-CoV-2 infection. The study looked at patients who were monitored for at least four weeks after their initial illness. They found that approximately 30.8 percent of the total group experienced symptoms consistent with Long COVID.
The data showed that the risk may be higher for some groups. Specifically, people who were hospitalized during their initial infection had a higher rate of Long COVID, at about 37.9 percent. In contrast, those not hospitalized had a lower reported prevalence of around 26.2 percent.
Because different studies used different ways to define the condition, the results can vary. Some definitions led to a 22.8 percent rate, while broader symptom-based definitions showed nearly 40 percent. Because these findings come from many different types of studies, the numbers should be seen as a general summary rather than a precise global rate.