New observational research out of Sweden has tracked more than one million COVID-19 cases for months after their acute illness, in order to determine how the disease influences subsequent risk of blood clots.

瑞典一项观察研究对100多万新冠病例进行了数月追踪，以确定新冠是如何影响感染者随后出现血栓的风险的。

The findings indicate COVID-19 significantly increases a person’s risk of deep vein thrombosis and pulmonary embolism in the months after infection.
研究结果表明，人们在感染新冠后几个月内深静脉血栓形成和肺栓塞的风险明显增加。

Factoring in acute disease severity, the researchers found those initially hit hardest with COVID-19 did experience greater long-term risk for blood clotting events.
研究人员发现，重症感染者血栓形成的风险更大。

However, the increased risk was not zero in those experiencing mild COVID.
但轻症感染者血栓形成的风险也有所增加。

Those with only a mild infection still showed a three-fold risk of DVT and a seven-fold risk of pulmonary embolism.
轻症患者的深静脉血栓形成风险增加3倍，而肺栓塞风险增加7倍。