Volume 74, Issue 6
  • ISSN: 0002-9637
  • E-ISSN: 1476-1645


is a major cause of diarrhea among children in developing countries. Since free-ranging chickens are a major source of infections, we hypothesized that corralling of these chickens would result in decreased rates of infections and -related diarrhea. We tested this hypothesis in Peruvian families in a periruban shantytown with free-ranging chickens and randomized by household using a (corralling) intervention versus control study design. Samples from participants and chickens were cultured for at the start of surveillance, and samples from children less than six years of age with diarrhea episodes and two sentinel chickens were cultured for monthly. Overall, 4,257 human stool specimens and 3,950 avian stool specimens were cultured over a 17-month period. Rates of -related diarrhea in children were significantly higher in the corral group, which demonstrated twice the incidence of diarrhea compared with controls overall, and seven times the rate of diarrhea versus controls in the subset with more than 20 household chickens. Rates of asymptomatic infection with were similar. Although corralling may be useful if corrals are distant from living quarters, it is not advisable as a control measure for in communities such as this.


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  • Received : 11 Jun 2004
  • Accepted : 20 Feb 2006
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