Case fatality rate increased with age, with 14.8% of cases in people over age 80 resulting in death. Patients ages 70 to 79 had an 8% fatality rate, while those 60 to 69 had a fatality rate of 3.6%.
Researchers calculated an overall fatality rate of 2.3%, with a total of 1,023 deaths recorded among the confirmed cases of the virus in the study.
Cardiovascular disease was the preexisting condition most associated with increased fatalities, with the study reporting a fatality rate of 10.5% in patients who suffered with the condition. Diabetes sufferers had a fatality rate of 7.3%, while the frequency of fatalities was also higher than the overall rate in people with chronic respiratory disease, hypertension and cancer.
In patients with no reported underlying conditions, the fatality rate dropped to 0.9%, according to the study.