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United States Department of Agriculture

Agricultural Research Service

Title: Characteristics of Salmonella, Eschericia Coli, and Other Enterobacteriaceae Isolated from U.S. Commercial Shell Egg

Authors
item Musgrove, Michael
item Jones, Deana
item Northcutt, Julie
item Cox, Nelson
item Harrison, Mark - UGA
item Ladely, Scott
item Cray, Paula

Submitted to: UJNR Food & Agricultural Panel Proceedings
Publication Type: Proceedings
Publication Acceptance Date: October 20, 2004
Publication Date: December 11, 2004
Citation: Musgrove, M.T., Jones, D.R., Northcutt, J.K., Cox Jr, N.A., Harrison, M.A., Ladely, S.R., Cray, P.J. 2004. Characteristics of salmonella, eschericia coli, and other enterobacteriaceae isolated from U.S. commercial shell egg. United States - Japan Cooperative Program in Natural Resources Panel Proceedings. p.336-341.

Interpretive Summary: In order to learn more about their microbiological safety, eggs were collected at twelve samples sites on the processing chain from three commercial shell egg processing plants. Eggs were microbiologically sampled for Enterobacteriaceae, Escherichia coli, and Salmonella. Enterobacteriaceae isolates were selected for genus-species identification. A variety of genus-species were detected at each of the three plants. Escherichia coli and Enterobacter spp. were isolated from each of the nine plant visits. Other genera isolated from at least one of the three plants included Cedecea, Citrobacter, Erwinia, Hafnia, Klebsiella, Kluyvera, Leclercia, Morganella, Proteus, Providencia, Rahnella, Salmonella, and Serratia. Non-Enterobacteriaceae isolated and identified included Aeromonas, Chryseomonas, Listonella, Pseudomonas, Sphingobacterium, Vibrio, and Xanthomonas. More antimicrobial resistance was noted in Salmonella than in generic E. coli isolates. Salmonella isolates were also serotyped. None of the isolates were identified as S. Enteritidis, the serotype most often identified with egg-borne outbreaks of salmonellosis.

Technical Abstract: In order to learn more about their microbiological safety, eggs were collected at twelve samples sites on the processing chain from three commercial shell egg processing plants. Eggs were microbiologically sampled for Enterobacteriaceae, Escherichia coli, and Salmonella. Enterobacteriaceae isolates were selected for genus-species identification. A variety of genus-species were detected at each of the three plants. Escherichia coli and Enterobacter spp. were isolated from each of the nine plant visits. Other genera isolated from at least one of the three plants included Cedecea, Citrobacter, Erwinia, Hafnia, Klebsiella, Kluyvera, Leclercia, Morganella, Proteus, Providencia, Rahnella, Salmonella, and Serratia. Non-Enterobacteriaceae isolated and identified included Aeromonas, Chryseomonas, Listonella, Pseudomonas, Sphingobacterium, Vibrio, and Xanthomonas. More antimicrobial resistance was noted in Salmonella than in generic E. coli isolates. Salmonella isolates were also serotyped. None of the isolates were identified as S. Enteritidis, the serotype most often identified with egg-borne outbreaks of salmonellosis.

Last Modified: 7/24/2014