How does COVID-19 compare with the flu?
COVID-19 is generally more severe than the flu.
Data to date suggests that about 20 percent of people with COVID-19 experience severe or critical illness, requiring hospitalization and often the administration of oxygen or mechanical ventilation.
Although there are millions of flu cases each year in the United States, a smaller percentage of flu cases are estimated to result in hospitalization.
The results of studies on the exact mortality rate for COVID-19 have so far been varied. This calculation has been dependent on factors like location and population age.
The estimated mortality rates are higher than that of seasonal influenza.