霍乱是我国传染病防治法规定的甲类传染病之一,特征是发病急、传播快、波及范围广,能引起大流行,危害性很大。2 0 0 0年四川省疾病预防控制中心细菌所实验室在对以往保存的霍乱弧菌进行转种保种的过程中,发现1999年转种保种时还很正常的93117、9312 0、9312 2等3株菌发生了变异 Cholera is one of the Class A infectious diseases prescribed by the Law on the Prevention and Control of Infectious Diseases in our country. It is characterized by its rapid onset, rapid spread and wide spread, which can cause a pandemic with great harm. In the process of transplanting and preserving Vibrio cholerae previously preserved in Sichuan Provincial Center for Disease Control and Prevention in 2000, it was found that it was still normal at the time of species conservation in 1999 93117, 9312 0, 9312 2 and other 3 strains of a mutation occurred