Methods: With serological and molecular techniques, we study chemical property, plasmid, CT gene and drug resistance of sporadic outbreak of vibro cholera in Shenzhen city.
方法：采用血清学和分子生物学相结合的方法，研究深圳地区散发不同血清型霍乱弧菌的生化特性、质粒、肠毒素基因携带和耐药状况。
Results: The sporadic outbreak of vibrio cholera has some characters: including non toxic strain infection, low detection rate of plasmid and ct gene and increase of drug resistance.
结果：散发性霍乱以无毒株为主，质粒及肠毒素基因的携带率极低，但耐药性有所增加。
It suggested inherent connection be - ween drug-resistance of the strains and plasmid.
结果提示耐药菌株与质粒有着内在联系。
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