Based on preliminary U.S. data, people with select underlying health conditions (e.g. diabetes, cardiovascular disease, and chronic lung disease) and known risk factors for respiratory infections (e.g. smoking) appear to be at higher risk for severe disease (hospitalizations and admission to intensive care units) from COVID-19 than people without these conditions.

Preliminary Estimates of the Prevalence of Selected Underlying Health Conditions Among Patients with Coronavirus Disease 2019 — United States, February 12–March 28, 2020