Alarmed as COVID patients' blood thickened, New York doctors try new treatments

J Mocco, MD, Director of Mount Sinai's Cerebrovascular Center, poses outside Mount Sinai Hospital in Manhattan, during the outbreak of the coronavirus disease (COVID-19) in New York City, New York, U.S., April 17, 2020. Picture taken April 17, 2020. REUTERS/Jeenah Moon

NEW YORK (Reuters) - As the novel coronavirus spread through New York City in late March, doctors at Mount Sinai Hospital noticed something strange happening to patients' blood.

Signs of blood thickening and clotting were being detected in different organs by doctors from different specialties. This would turn out to be one of the alarming ways the virus ravages the body, as doctors there and elsewhere were starting to realize.