Written by James Kingsland on February 4, 2021 — Fact checked by Hilary Guite, FFPH, MRCGP Excessive blood clotting is a recognized feature of severe COVID-19. But a new study suggests that some hospitalized patients may also be vulnerable to bleeding, which is associated with an increased risk of death. After an injury, clotting prevents dangerous loss of blood. Blood clots, or “thrombi,” can also block blood vessels, however, with potentially fatal consequences. Normally, o