While a higher risk of blood clots after COVID-19 remained for the entire study duration, from week 26 to week 49, the likelihood of blood clots developing had dropped to 1.3 times in arteries and 1.8 times in veins. The researchers also found that people with mild or moderate disease who were not hospitalised too were affected, though the excess risk was not as high as those with severe disease and requiring hospitalisation.
