A 73-year-old man with hypertension and chronic obstructive pulmonary disease reports that he has had fever, cough, and shortness of breath for 2 days. His medica-tions include losartan and inhaled glucocorticoids. He lives alone. How should he be evaluated? If he has coronavirus disease 2019 (Covid-19), the disease caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), then how should he be treated?