And sticky blood can lead to blood clots. This change in the blood is the result of severe inflammation in the lungs, a natural response of the body to the virus. "In severely affected patients we ...

Pulmonary embolism is the sudden blockage of a major blood vessel (artery) in the lung, usually by a blood clot. In most cases, the clots are small and aren't deadly, but they can damage the lung. But ...