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Isolation and characterization of Listeria monocytogenes isolates from ready-to-eat foods in Florida.

ABSTRACT: Of 3,063 ready-to-eat food samples tested, 91 (2.97%) were positive for Listeria monocytogenes, and lineage 1 strains outnumbered lineage 2 strains 57 to 34. Seventy-one isolates (78%) exhibited multiple antibiotic resistance, and an L. monocytogenes-specific bacteriophage cocktail lysed 65 of 91 (71%) isolates. Determining phage, acid, and antibiotic susceptibility phenotypes enabled us to identify differences among strains which were otherwise indistinguishable by conventional methods.

SUBMITTER: Shen Y 

PROVIDER: S-EPMC1489337 | biostudies-literature | 2006 Jul

REPOSITORIES: biostudies-literature

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Isolation and characterization of Listeria monocytogenes isolates from ready-to-eat foods in Florida.

Shen Yuelian Y   Liu Yan Y   Zhang Yifan Y   Cripe Jennifer J   Conway William W   Meng Jianghong J   Hall Grace G   Bhagwat Arvind A AA  

Applied and environmental microbiology 20060701 7

Of 3,063 ready-to-eat food samples tested, 91 (2.97%) were positive for Listeria monocytogenes, and lineage 1 strains outnumbered lineage 2 strains 57 to 34. Seventy-one isolates (78%) exhibited multiple antibiotic resistance, and an L. monocytogenes-specific bacteriophage cocktail lysed 65 of 91 (71%) isolates. Determining phage, acid, and antibiotic susceptibility phenotypes enabled us to identify differences among strains which were otherwise indistinguishable by conventional methods. ...[more]

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