一、弯曲菌(Campylobacter)属螺菌科。包括3种:1.胎儿弯曲菌(C.fetus);2.痰液弯曲菌(c.sputorum);3.粪便弯曲菌(C.fecalis)。胎儿弯曲菌分3个亚种:胎儿亚种、肠道亚种和空肠亚种。所谓空肠弯曲菌,就是胎儿弯曲菌空肠亚种之简称。痰液弯曲菌分2个亚种,痰液亚种及牛亚种。弯曲菌为革兰氏阴性弯曲状细小杆菌,偶而呈螺旋状,无芽胞,无荚膜,有活动力,一端或两端有单鞭毛,其 First, Campylobacter (Spirillum Division). Including three kinds: 1. Campylobacter fetus (C.fetus); 2. Campylobacter sputum (c.sputorum); 3. Campylobacter fecal (C.fecalis). Campylobacter fetus divided into three subspecies: fetal subspecies, intestinal subspecies and jejunum subspecies. The so-called Campylobacter jejuni, Campylobacter jejuni is the abbreviation. Sputum Campylobacter subsp. 2 subspecies, sputum subspecies and bovine subspecies. Campylobacter is Gram-negative bent albicans, occasionally spiral, spore-free, capsule-free, motile, with single flagella at one or both ends,