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Microbial health risk posed by table eggs in Trinidad

Published online by Cambridge University Press:  02 June 2005

A. ADESIYUN
Affiliation:
School of Veterinary Medicine, Faculty of Medical Sciences, University of the West Indies, St Augustine Campus, Trinidad and Tobago
N. OFFIAH
Affiliation:
School of Veterinary Medicine, Faculty of Medical Sciences, University of the West Indies, St Augustine Campus, Trinidad and Tobago
N. SEEPERSADSINGH
Affiliation:
School of Veterinary Medicine, Faculty of Medical Sciences, University of the West Indies, St Augustine Campus, Trinidad and Tobago
S. RODRIGO
Affiliation:
School of Veterinary Medicine, Faculty of Medical Sciences, University of the West Indies, St Augustine Campus, Trinidad and Tobago
V. LASHLEY
Affiliation:
Poultry Surveillance Unit, Ministry of Agriculture, Land and Marine Resources, Trinidad and Tobago
L. MUSAI
Affiliation:
Poultry Surveillance Unit, Ministry of Agriculture, Land and Marine Resources, Trinidad and Tobago
K. GEORGES
Affiliation:
School of Veterinary Medicine, Faculty of Medical Sciences, University of the West Indies, St Augustine Campus, Trinidad and Tobago
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Abstract

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A survey of the microbial quality of table eggs sold in Trinidad was conducted. For 23 poultry layer farms each visited twice approximately 1 month apart, 25 pooled eggs constituted a composite sample, for 14 shopping malls each visited twice approximately 1 month apart, six pooled eggs made a composite sample and for a total of 102 other retailers across the country each visited once over a 4-month period, six pooled eggs constituted a composite sample. Swabs of egg shells and egg content were tested for selected bacteria. Twenty-four (13·0%), 68 (37·0%), and two (1·1%) of a total of 184 composite eggs (shells, egg content or both) sampled were positive for Salmonella, Escherichia coli, and Campylobacter respectively. All 184 samples tested were negative for Listeria spp. Salmonella was recovered from seven (3·8%) egg shell samples only compared with 14 (7·6%) egg content samples only positive for the pathogen. Fifty-two (28·3%) egg shell samples and seven (3·8%) egg content samples were positive for E. coli. Both isolates of Campylobacter coli originated from egg contents. Of a total of 24 composite egg samples positive for Salmonella, eight different serotypes of Salmonella were isolated from a total of 24 Salmonella-positive composite eggs of which S. Enteritidis was the most prevalent, 58·3% (14/24). Salmonella Georgia was isolated for the first time in Trinidad. Failure to properly handle or heat table eggs sold in Trinidad poses a potential health hazard to consumers because of their poor microbial quality.

Type
Research Article
Copyright
2005 Cambridge University Press