CDC - Published July 1 2021
95% of the 5 million adults (rounded) had at least one medical condition
https://www.cdc.gov/pcd/issues/2021/21_0123.htm
Results
Among 4,899,447 hospitalized adults in PHD-SR, 540,667 (11.0%) were patients with COVID-19, of whom 94.9% had at least 1 underlying...