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A milk-borne campylobacter outbreak following an educational farm visit

Evans, Meirion Rhys, Roberts, R. J., Ribeiro, C. D., Gardner, D. and Kembrey, D. 2009. A milk-borne campylobacter outbreak following an educational farm visit. Epidemiology and Infection 117 (03) , pp. 457-462. 10.1017/S0950268800059112

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After a nursery school trip to a dairy farm, 20 (53%) of 38 children and 3 (23%) of 13 adult helpers developed gastrointestinal infection. Campylobacter jejuni was isolated from 15 primary cases and from 3 of 9 secondary household cases. A cohort study of the school party found illness to be associated with drinking raw milk (relative risk 5·4, 95 % confidence interval 1·4–20·4, P = 0·001). There was a significant dose response relationship between amount of raw milk consumed and risk of illness (X2-test for linear trend 12·1, P = 0·0005) but not with incubation period, severity of symptoms or duration of illness. All 18 human campylobacter isolates were C. jejuni resistotype 02 and either biotype I (number 16) or biotype II (number 2). Campylobacter was also isolated from samples of dairy cattle and bird faeces obtained at the farm but these were of different resisto/biotypes. Educational farm visits have become increasingly popular in recent years and this outbreak illustrates the hazard of exposure to raw milk in this setting.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Medicine
Subjects: R Medicine > R Medicine (General)
Publisher: Cambridge University Press
ISSN: 0950-2688
Last Modified: 21 Aug 2019 02:34

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