屋顶鼠（黑家鼠）在日本东部蛋鸡养殖场肠炎沙门氏菌和婴儿沙门氏菌污染传播中的作用。
The role of roof rats ( Rattus rattus) in the spread of Salmonella Enteritidis and S. Infantis contamination in layer farms in eastern Japan.
作者信息
Lapuz R, Tani H, Sasai K, Shirota K, Katoh H, Baba E
机构信息
Department of Veterinary Clinical Science, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Naka-ku, Sakai, Osaka, Japan.
出版信息
Epidemiol Infect. 2008 Sep;136(9):1235-43. doi: 10.1017/S095026880700948X. Epub 2007 Nov 8.
The prevalence of Salmonella in four layer farms in eastern Japan was investigated between 2004 and 2006 to determine the role of roof rats (Rattus rattus) in the epizootology of Salmonella enterica subsp. enterica serovar Enteritidis (S. Enteritidis). Persistent S. Enteritidis and S. Infantis contamination of the environment and pooled egg samples were detected in three out of four layer farms. A total of 113 (13.3%) and 158 (18.6%) out of 851 rats examined were positive for S. Enteritidis and S. Infantis, respectively. By pulsed-field gel electrophoresis, only one indistinguishable pulsed-field pattern was yielded by S. Enteritidis strains from rats, eggs and environmental samples from each of the two contaminated layer farms. Although, a variety of pulsed-field patterns were generated by S. Enteritidis isolates from rats, eggs, and the environment of the other contaminated farms, there are, however, some S. Enteritidis strains that are closely related clones. These results suggest that roof rats are carriers of S. Enteritidis and S. Infantis and that persistent S. Enteritidis and S. Infantis infections in a rat population may play an important role in the spread and maintenance of these pathogens inside the layer premises.
2004年至2006年期间，对日本东部四个蛋鸡养殖场沙门氏菌的流行情况进行了调查，以确定屋顶鼠（褐家鼠）在肠炎沙门氏菌肠炎亚种肠炎血清型（肠炎沙门氏菌） epizootology中的作用。在四个蛋鸡养殖场中的三个检测到环境和混合蛋样中存在持续性肠炎沙门氏菌和婴儿沙门氏菌污染。在检查的851只老鼠中，分别有113只（13.3%）和158只（18.6%）的肠炎沙门氏菌和婴儿沙门氏菌检测呈阳性。通过脉冲场凝胶电泳，来自两个受污染蛋鸡养殖场中每个养殖场的老鼠、鸡蛋和环境样本中的肠炎沙门氏菌菌株仅产生一种无法区分的脉冲场模式。尽管来自其他受污染养殖场的老鼠、鸡蛋和环境中的肠炎沙门氏菌分离株产生了多种脉冲场模式，但仍有一些肠炎沙门氏菌菌株是密切相关的克隆。这些结果表明，屋顶鼠是肠炎沙门氏菌和婴儿沙门氏菌的携带者，并且鼠群中持续性肠炎沙门氏菌和婴儿沙门氏菌感染可能在蛋鸡养殖场内这些病原体的传播和维持中起重要作用。
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