Skip to main content
Fig. 1 | BMC Infectious Diseases

Fig. 1

From: Changes in the intrinsic severity of severe acute respiratory syndrome coronavirus 2 according to the emerging variant: a nationwide study from February 2020 to June 2022, including comparison with vaccinated populations

Fig. 1

Monthly age-standardized case severity rate (A) and case fatality rate (B) with the proportion of SARS-CoV-2 variant. aCSR: age-standardized case severity rate; aCFR: age-standardized case fatality rate. A Case severity rate: (number of severe/critical cases and deaths among confirmed cases in a specific period)/number of confirmed cases in a specific period *100 (standard population: total number of confirmed cases in the whole period). B Case fatality rate: (number of deaths among confirmed cases in a specific period)/number of confirmed cases in a specific period *100 (standard population: total number of confirmed cases in the whole period)

Back to article page

BMC Infectious Diseases

ISSN: 1471-2334

Contact us