Detection of Salmonella in Spent Hens and Eggs Associated with Foodborne Infections

About 16,000 spent hens from 23 farms in the northern area of Japan were purchased in 1996, 1997, 1998, and 1999 to isolate Salmonella in two poultry processing plants. Salmonella was detected in 12 of 23 farms (52.2%). In particular, the serotypes Enteritidis and Infantis were detected in four and...

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Bibliographic Details
Published in:Avian diseases 2007-06, Vol.51 (2), p.578-583
Main Authors: Otomo, Y, Abe, K, Odagiri, K, Shiroto, A, Takatori, K, Hara-Kudo, Y
Format: Article
Language:English
Subjects:
Animals
Cecum
Chickens - microbiology
Crops
Disease Outbreaks
disease prevalence
egg
Eggs
Enteritidis
Female
Food Microbiology
foodborne illness
foodborne infections
Humans
Immatures
Infections
laying farm
microbial detection
Oviducts
Ovum - microbiology
Poultry
poultry diseases
Poultry Diseases - epidemiology
Poultry Diseases - microbiology
Prevalence
Regular s
Salmonella
Salmonella - isolation & purification
Salmonella enterica subsp. enterica serovar Infantis
Salmonella enteritidis
Salmonella infantis
Salmonella Infections - epidemiology
Salmonella Infections - microbiology
salmonellosis
serotypes
Spent hens
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Summary:About 16,000 spent hens from 23 farms in the northern area of Japan were purchased in 1996, 1997, 1998, and 1999 to isolate Salmonella in two poultry processing plants. Salmonella was detected in 12 of 23 farms (52.2%). In particular, the serotypes Enteritidis and Infantis were detected in four and three farms, respectively. The prevalence rates in the hens' ceca, immature eggs, and the yolk of mature eggs in oviducts were 14%, 7.2%, and 6.8%, respectively. A total of 23 serotypes were detected. The major serotypes of the strains were Enteritidis, Corvallis, Typhimurium, and Infantis, but most of the strains were untypable. In the same area during 1992 to 1996, Salmonella was detected in eggs associated with four outbreaks of Salmonella Enteritidis infection and one outbreak of Salmonella Infantis infection. The ratio of contamination was approximately 1%, and the level was estimated to be 93 MPN(most probable number)/100 g in one outbreak. In farms that produced the eggs associated with all of the five outbreaks of Salmonella, the serotype Enteritidis or Infantis was isolated from hens. Farms where Salmonella was not detected were not related to any of the outbreaks.
ISSN:0005-2086
1938-4351
DOI:10.1637/0005-2086(2007)51[578:DOSISH]2.0.CO;2