80年代中,注意到一个有别于甲基菌属(Methylobacterium)的粉红色细菌与人类感染有关。25余年来,从血液和其他临床标本中曾分离出产粉红色、氧化型的革兰氏阴性细菌,其中几乎一半来自血液,约20%从伤口和脓肿分离,约10%来自泌尿生殖道。Gi-lardi和Faur曾描述7株这类细菌,其中5株来自血液,并归为“未定名类”群。Wallace等研究了1966年来收集的156株产粉红色 In the 1980s, it was noticed that a pink bacterium different from Methylobacterium was associated with human infection. For more than 25 years, pink, oxidized Gram-negative bacteria have been isolated from blood and other clinical specimens, almost half of them from the blood, about 20% from wounds and abscesses, and about 10% from the urogenital tract. Seven strains of this bacterium have been described by Gi-lardi and Faur, of which five are from the blood and are classified as “undetermined”. Wallace et al. Studied 156 pink-colored collections collected in 1966