SALMONELLOSIS (EXCLUDING SALMONELLA TYPHI AND SALMONELLA PARATYPHI INFECTIONS)

Method & caveats. Annual reported salmonellosis incidence from NCHS and CDC NNDSS. The workbook includes paratyphoid before 2018; label variants are resolved separately for each year. CIDTs increased detection from roughly 2012 without necessarily changing true incidence. Rates through 2019 are NCHS's; rates from 2020 are the NNDSS final count divided by the Census July 1 resident population (FRED POPTHM), using a later population vintage (about 1% higher denominator). This is not always the same construction: IDNotif excludes populations of jurisdictions where a disease was not notifiable or data were unavailable; STD rates before 1991 use civilian population. Selected years before 1988 are not interpolated.