军团菌(Legionella)是一种革兰氏阴性兼性细胞内寄生菌,广泛存在于天然淡水、人工水域和土壤中,是引起军团菌病(Legionellosis)的病原菌。目前,已确认军团菌有50种,70多个血清型,接近20种有临床分离报道,其中与人类关系最密切的是嗜肺军团菌,共分为16个血清型,每个血清型都有致病性,以1型最常见。我国自1982年在南京首次发现军 Legionella is a Gram-negative facultative intracellular parasite that is widespread in natural freshwater, artificial waters and soil and is the causative agent of Legionellosis. At present, it has been confirmed Legionella has 50 species, more than 70 serotypes, nearly 20 kinds of clinical isolation reported, of which the most closely related to human Legionella pneumophila, is divided into 16 serotypes, each serotype Pathogenic, the most common type 1. Our country first discovered the army in Nanjing since 1982