1

Case-fatality rate for pertussis calculated by dividing the total number of cases from 1998 to 2017 by the total number of deaths for the same time period and rounding the result to the nearest hundred.

Source for the number of cases and deaths 2017: https://www.cdc.gov/pertussis/downloads/pertuss-surv-report-2017.pdf

Source for the number of cases and deaths 2016: https://www.cdc.gov/pertussis/downloads/pertuss-surv-report-2016.pdf

Source for the number of cases and deaths 2015: https://www.cdc.gov/pertussis/downloads/pertuss-surv-report-2015.pdf

Source for the number of cases and deaths 1988-2014: https://www.cdc.gov/vaccines/pubs/pinkbook/downloads/appendices/E/reported-cases.pdf