The London-based study, published in British medical journal Heart, examined the records of nearly 20,000 U.K. residents who had experienced COVID, and compared them with those of similar individuals who had not.
Researchers found that individuals who had been diagnosed with COVID but weren’t hospitalized were still at a risk nearly three times as high for venous thromboembolism—blood clots in veins that can include deep vein thrombosis and pulmonary embolism—when compared with similar individuals who hadn’t had COVID.