title: Contamination of poultry products with Listeria monocytogenes at poultry processing plants.
abstract: This study aimed to confirm that poultry products packed at poultry processing plants have already been contaminated with Listeria monocytogenes and that poultry products contaminated with L. monocytogenes are derived from broiler flocks infected with L. monocytogenes. L. monocytogenes was isolated from 16.8% (58/345) of chicken breast products and 2.3% (8/345) of chicken liver products. In contrast, L. monocytogenes was isolated from the pooled cecal content sample from only 1 (4%) of 25 flocks and was never isolated from any pooled dropping samples collected from 25 farms. The results of our study indicate that cecal content does not seem to be an important source of L. monocytogenes in poultry products.
authors.affiliation: Food Safety and Consumer Affairs Bureau, Ministry of Agriculture, Forestry and Fisheries, 1-2-1, Kasumigaseki, Chiyoda-ku, Tokyo 100-8950, Japan.
authors.forename: Yoshimasa
authors.initials: Y
authors.lastname: Sasaki
authors.forename: Mika
authors.initials: M
authors.lastname: Haruna
authors.forename: Mariko
authors.initials: M
authors.lastname: Murakami
authors.forename: Mizuho
authors.initials: M
authors.lastname: Hayashida
authors.forename: Nao
authors.initials: N
authors.lastname: Takahashi
authors.forename: Tetsuo
authors.initials: T
authors.lastname: Urushiyama
authors.forename: Kazuo
authors.initials: K
authors.lastname: Ito
authors.forename: Yukiko
authors.initials: Y
authors.lastname: Yamada
mesh_terms: D000818:Animals; D002645:Chickens / Q000382:microbiology*; D005243:Feces / Q000382:microbiology; D005511:Food Handling / Q000379:methods*; D005516:Food Microbiology; D008089:Listeria monocytogenes / Q000302:isolation & purification*; D008099:Liver / Q000382:microbiology; D008460:Meat / Q000382:microbiology*; D018482:Muscle, Skeletal / Q000382:microbiology
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