Weiner M, Werthamer S
Am J Clin Pathol. 1975 Sep;64(3):378-81. doi: 10.1093/ajcp/64.3.378.
An 85-year-old woman with the diagnosis of diabetic ketoacidosis developed septicemia during hospitalization. Cultures of the patient's blood revealed the presence of Gram-variable coccobacilli, later identified as Corynebacterium aquaticum. The microorganisms grew aerobically on blood agar plates after incubation overnight. The colonies were convex, non-hemolytic and slightly yellow-pigmented. No growth was observed on MacConkey and endo agar plates. The organisms were catalase-positive, oxidase-negative, motile, and oxidized glucose and mannitol. The morphologic and biochemical properties of Corynebacterium aquaticum should be considered for separation from related organisms such as Listeria monocytogenes, Corynebacterium species and oxidative Gram-negative rods that do not grow on MacConkey medium (Flavobacterium spp.).
一名85岁诊断为糖尿病酮症酸中毒的女性患者在住院期间发生败血症。患者血液培养显示存在革兰氏可变球杆菌，后来鉴定为水生棒状杆菌。微生物在血琼脂平板上需氧培养过夜后生长。菌落凸起，不溶血，略带黄色色素。在麦康凯和伊红美蓝琼脂平板上未观察到生长。这些微生物过氧化氢酶阳性，氧化酶阴性，有动力，能氧化葡萄糖和甘露醇。在从相关微生物如单核细胞增生李斯特菌、棒状杆菌属以及不在麦康凯培养基上生长的氧化型革兰氏阴性杆菌（黄杆菌属）中分离时，应考虑水生棒状杆菌的形态和生化特性。
