“A new study of more than 800,000 people has found that in the U.S., COVID “long haulers” were more likely to be older and female, with more chronic conditions than people in a comparison group who — after getting COVID — did not have diagnosed long COVID or any of the symptoms associated with long COVID. The findings are published in the March issue of Health Affairs.”
This study was carried out by Harvard University.
Who Is Most at Risk for Long COVID? | Harvard Medical School