Salmonellosis in hospitalized horses: seasonality and case fatality rates.
Salmonellosis was studied during an 11-year period (July 1971 through June 1982) in 245 hospitalized horses. Ten years' data (207 cases) were analyzed in a time series study. Peak seasonality of the disease was from June through September. The cycle curve revealed 3 major outbreaks, with no apparent periodicity. Eighteen Salmonella serotypes caused clinical salmonellosis in horses, but 84% of the cases and 90% of the deaths were caused by 5 serotypes: Salmonella typhimurium, S typhimurium var copenhagen, S anatum, S kottbus, and S saint-paul. Overall, the case fatality rate was 44.9%. Excluding mixed infections, horses infected with S typhimurium and S typhimurium var copenhagen, had a significantly higher (P less than 0.001) case fatality rate (60.4%) than those infected with other Salmonella serotypes (32.3%).
Carter
J D
JD
Hird
D W
DW
Farver
T B
TB
Hjerpe
C A
CA
D000367:Age Factors; D000818:Animals; D006734:Horse Diseases / Q000453:epidemiology / Q000209:etiology* / Q000401:mortality; D006736:Horses; D006760:Hospitalization; D012306:Risk; D012481:Salmonella Infections, Animal / Q000453:epidemiology* / Q000401:mortality; D012621:Seasons; D012703:Serotyping; D012737:Sex Factors; D013997:Time Factors