Gray S J
J Hyg (Lond). 1984 Jun;92(3):365-75. doi: 10.1017/s0022172400064585.
Faecal samples from 110 horses, 115 pigs, 111 sheep and 123 cows were examined for the presence of Aeromonas hydrophila, which was also sought in the available drinking water. The overall faecal rate was 11.8%, but significantly more bovine than other samples were found to be positive. There was significant association between the isolation of A. hydrophila from all animal faeces and its presence in drinking water, but this was not found when individual animal groups were analysed separately. An enrichment technique increased the total number of isolates by 77.1%. Strains of differing origins could not be differentiated by biotyping, although fermentation of sorbitol was associated with bovine isolates. There was a strong positive correlation between positive reactions for V--P, gluconate oxidase and haemolysis of rabbit erythrocytes, tests which had previously been shown to correlate with production of enterotoxin and cytotoxin. Biotypes giving positive reactions for these tests were most frequently isolated from cows, sheep and untreated water, and less frequently from pigs and horses. Most strains of A. hydrophila were resistant to amoxycillin, carbenicillin and cephradine, and sensitive to gentamicin, chloramphenicol and neomycin.
对110匹马、115头猪、111只羊和123头牛的粪便样本进行了嗜水气单胞菌检测，并对可用饮用水也进行了检测。粪便总体检出率为11.8%，但发现牛的粪便样本阳性率显著高于其他动物。从所有动物粪便中分离出嗜水气单胞菌与该菌在饮用水中的存在之间存在显著关联，但对各个动物组分别分析时未发现这种关联。一种富集技术使分离株总数增加了77.1%。不同来源的菌株无法通过生物分型进行区分，不过山梨醇发酵与牛分离株有关。V-P试验、葡萄糖酸盐氧化酶试验和兔红细胞溶血试验呈阳性反应之间存在很强的正相关性，此前已证明这些试验与肠毒素和细胞毒素的产生相关。对这些试验呈阳性反应的生物型最常从牛、羊和未处理的水中分离得到，从猪和马中分离得到的频率较低。大多数嗜水气单胞菌菌株对阿莫西林、羧苄青霉素和头孢拉定耐药，对庆大霉素、氯霉素和新霉素敏感。
