Nakajima H, Inoue M, Mori T
Okayama Prefectural Institute for Environmental Science and Public Health.
Nihon Koshu Eisei Zasshi. 1991 Oct;38(10):815-20.
Yersinia, Campylobacter, Plesiomonas and Aeromonas are known causative agents in waterborne diseases. For about 10 years, outbreak of diarrhea has been observed, especially among children, in the mountain areas of Okayama. Y. pseudotuberculosis recently isolated from non-chlorinated drinking water sources such as mountain streams and wells has been suspected to be the causative bacteria of the disease. Attempts were made to isolate Yersinia and Campylobacter from water samples from rivers in rural areas and Plesiomonas and Aeromonas from samples of well water and fresh water fishes in Okayama prefecture from 1987 to 1990. The isolation rate of Yersinia from river water samples was 7.5% with a higher rate in the mountain areas than in the nonmountain areas. While Y. enterocolitica was isolated throughout the year, Y. pseudotuberculosis was only seen during the winter. Various serogroups including human types of Y. enterocolitica and serogroup 2B, 4A and UT of Y. pseudotuberculosis were detected. Campylobacter was isolated from 0.5% of river water samples. Plesiomonas from 1.5% of fresh water fishes, and Aeromonas was isolated from 6.9% of well water samples and 47.1% of fresh water fishes.
耶尔森氏菌、弯曲杆菌、邻单胞菌和气单胞菌是已知的水源性疾病病原体。在冈山山区，尤其是儿童中，腹泻疫情已持续约10年。最近从山间溪流和水井等未经过氯化处理的饮用水源中分离出的假结核耶尔森氏菌被怀疑是该病的致病菌。1987年至1990年期间，研究人员试图从农村地区河流的水样中分离耶尔森氏菌和弯曲杆菌，从冈山县井水和淡水鱼样本中分离邻单胞菌和气单胞菌。河流水样中耶尔森氏菌的分离率为7.5%，山区的分离率高于非山区。虽然全年都能分离出小肠结肠炎耶尔森氏菌，但假结核耶尔森氏菌仅在冬季出现。检测到了包括小肠结肠炎耶尔森氏菌的人类类型以及假结核耶尔森氏菌的2B、4A和UT血清群在内的各种血清群。弯曲杆菌从0.5%的河流水样中分离得到。邻单胞菌从1.5%的淡水鱼中分离得到，气单胞菌从6.9%的井水样本和47.1%的淡水鱼中分离得到。
