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  • Title: Risk factors for Salmonella prevalence in laying-hen farms in Japan.
    Author: Sasaki Y, Murakami M, Maruyama N, Tsujiyama Y, Kusukawa M, Asai T, Yamada Y.
    Journal: Epidemiol Infect; 2012 Jun; 140(6):982-90. PubMed ID: 21849097.
    Abstract:
    Human salmonellosis cases, particularly those caused by Salmonella Enteritidis, have been closely linked to egg consumption. This epidemiological survey was conducted to determine the baseline Salmonella prevalence and identify the risk factors for Salmonella prevalence in laying-hen farms in Japan. Caecal excrement samples and dust samples were obtained from 400 flocks in 338 laying-hen farms. Salmonella was identified in 20.7% of the farms and 19.5% of the flocks. The prevalence of Salmonella was significantly higher in flocks reared in windowless houses than in those reared in open houses. In addition, the risk of Salmonella presence was significantly higher when the windowless house farms implemented induced moulting or in-line egg processing. Efforts to reduce human salmonellosis in Japan should continue to focus on the establishment of control measures in laying-hen farms, especially those with windowless houses implementing induced moulting and equipped with in-line egg processing.
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