Salmonella typhimurium and Salmonella enteritidis: changing epidemiology from 1973 until 1992.
A retrospective analysis, covering a period of 20 years, of 2049 primo-isolates of Salmonella typhimurium and 343 primo-isolates of Salmonella enteritidis was performed at our laboratory. In 1991, S. enteritidis (43.8%) outnumbered S. typhimurium (32.1%) as the most frequently isolated Salmonella. The age group distribution of S. enteritidis yielded peaks in the under-five and above-60 year age groups, whereas S. typhimurium only peaked in the under-five age group. S. enteritidis appeared to be twice as invasive as S. typhimurium. Both serotypes were more invasive in middle and older age groups than in under-fives.
Department of Bacteriology, St. Raphael University Hospital, Leuven, Belgium.
F
F
Le Bacq
B
B
Louwagie
J
J
Verhaegen
D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D016470:Bacteremia / Q000382:microbiology; D001530:Belgium / Q000453:epidemiology; D002648:Child; D002675:Child, Preschool; D015169:Colony Count, Microbial; D005243:Feces / Q000382:microbiology; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D012189:Retrospective Studies; D012480:Salmonella Infections / Q000453:epidemiology*; D012477:Salmonella enteritidis / Q000145:classification / Q000302:isolation & purification* / Q000472:pathogenicity; D012486:Salmonella typhimurium / Q000145:classification / Q000302:isolation & purification* / Q000472:pathogenicity; D012703:Serotyping