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A comparison of Salmonella enteritidis phage types from egg-associated outbreaks and implicated laying flocks

Published online by Cambridge University Press:  15 May 2009

S. Altekruse*
Affiliation:
The Food and Drug Administration, Washington. DC
J. Koehler
Affiliation:
Centers for Disease Control. Atlanta. GA
F. Hickman-Brenner
Affiliation:
Centers for Disease Control. Atlanta. GA
R. V. Tauxe
Affiliation:
Centers for Disease Control. Atlanta. GA
K. Ferris
Affiliation:
United States Department of Agriculture, Ames, Iowa
*
*Sean F. Altekruse. Food and Drug Administration. Center for Food Safety and Applied Nutrition. HFF-265. 200 C Street. S.W.. Washington. DC 20204.
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Summary

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Infections due to Salmonella enteritidis are increasing worldwide. In the United States, between 1985 and 1989. 78% of the S. enteritidis outbreaks in which a food vehicle was identified implicated a food containing raw or lightly cooked shell eggs.

Under a US Department of Agriculture regulation published in 1990, eggs implicated in human food-borne S. enteritidis outbreaks were traced back to the source flock. The flock environment and the internal organs of a sample of hens were tested for S. enteritidis. We compared the S. enteritidis phage types of isolates from 18 human, egg-associated outbreaks and the 15 flocks implicated through traceback of these outbreaks. The predominant human outbreak phage type was recovered from the environment in 100% of implicated flocks and from the internal organs of hens in 88% of implicated flocks we tested. The results support the use of phage typing as a tool to identify flocks involved in human S. enteritidis outbreaks.

Type
Research Article
Copyright
Copyright © Cambridge University Press 1993

References

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