Individuals with Down syndrome, the nation’s most common genetic disorder, represent a small, vulnerable segment of the U.S. population whose comorbid conditions may make them particularly susceptible to severe forms of COVID-19. According to a recent study from the Icahn School of Medicine at Mount Sinai, people with Down syndrome who are over the age of 30 appear to be about nine times as likely as the general population to be hospitalized for COVID-19, and their hospital stays tend to be more than twice as long, with a median of 17 days.