巴尔通体(Bartonella species)是一群革兰氏染色阴性、营养条件要求苛刻、兼性细胞内寄生的需氧杆菌,主要寄生在动物宿主和人的血管内皮细胞和红细胞内,20世纪90年代以后,在欧美地区一些流浪人群中出现了由巴尔通体引起的菌血症、心内膜炎,一些艾滋病人群中出现了杆菌性血管瘤等,由于这些疾病以往不曾为人们所认识,被WHO确认为新发传染病,因而引起广泛关注。 Bartonella species (Bartonella species) is a group of Gram-negative, nutrient-demanding, facultative intracellular parasitic aerobic bacteria, mainly parasites in animal hosts and human vascular endothelial cells and red blood cells, the 20th century after the 90s, Bacteriosis, endocarditis and bacteriological hemangiomas in some AIDS-related people have been observed in some vagrants in Europe and the United States. Since these diseases have not been recognized by people in the past, they have been confirmed as new by WHO Infectious diseases, which caused widespread concern.