What coexisting conditions are most highly correlated with death from covid-19? how do we protect people with those conditions from the disease?

Prevention technique: Per CDC, uncontrolled underlying conditions that ^ risk include liver or chronic lung disease, chronic kidney disease with dialysis, diabetes, severe obesity, serious cardiac illness, being immunocompromised (immunodeficiency, cancer treatments, transplant recipients, smokers & chronic steroid use). REF: https://www.cdc.gov/coronavirus/2019-ncov/need-extra-precautions/people-at-higher-risk.html.