外环境甲型H7N9流感病毒的消毒及效果评估

发布时间：2018-11-03 08:19

【摘要】：目的探讨外环境中甲型H7N9流感病毒的消毒措施及效果评估,为甲型H7N9流感防控提供依据。方法采用RT-PCR法,对杭州市富阳区2014年的203份活禽流通外环境标本进行H7N9病毒核酸检测;按初步消毒、彻底清洁、终末消毒的步骤进行暴露点消毒处理,以消毒前后自然菌杀灭率≥90.0%为主要评判依据进行清洁效果评价;以大肠菌群和H7N9病毒核酸检测为辅助评判依据。结果 203份外环境标本甲型H7N9流感病毒核酸阳性率为30.0%,其中阳性病例相关家禽圈养点阳性率最高,为61.1%,城乡活禽市场阳性率次之,为51.9%;首次终末消毒后用自然菌杀灭合格率评价消毒效果,禽舍地面合格率未达到90.0%,禽笼具合格率未达100.0%。增强2个点位终末消毒、改进处置方式后结合清洁效果评价和大肠菌群杀灭率进行评估,证实消毒措施调整有效,消毒效果评价合格。结论甲型H7N9流感的外环境消毒应采用初步消毒、彻底清洁、终末消毒的处理步骤;消毒效果评价以消毒前后自然菌的杀灭率≥90.0%为主要评判依据,结合清洁效果评价、大肠菌群杀灭率和H7N9病毒核酸阴转率为辅助评判依据的综合评定法科学且实用。
[Abstract]:Objective to explore the disinfection measures and effectiveness evaluation of influenza A (H7N9) virus in external environment, and to provide evidence for prevention and control of influenza A (H7N9). Methods RT-PCR method was used to detect the H7N9 virus nucleic acid in 203 live poultry samples from Fuyang District of Hangzhou City in 2014. According to the steps of preliminary disinfection, thorough cleaning and final disinfection, the exposure point was disinfected, and the cleaning effect was evaluated on the basis of the killing rate of natural bacteria 鈮，

本文编号：2307232