摘要
目的掌握南宁市登革热媒介季节消长及其影响因素,为防控登革热提供科学依据。方法伊蚊种群、密度监测采用布雷图指数法、标准间指数法、诱蚊诱卵器指数法、栖息蚊虫捕捉法、人诱停落法、双层叠帐法;伊蚊携带病毒监测采用RT-PCR分型方法检测病毒核酸和登革热病毒分离方法;气候、环境等因素监测采用定期收集气象部门的观测数据和实时现场记录的气候、环境数据。结果南宁市2015年5月—2018年4月捕获的伊蚊均为白纹伊蚊,未发现埃及伊蚊,均未检出登革热病毒。常年有伊蚊活动,密度随季节消长,高峰期为5—9月;与气温、日照时间、相对湿度、降雨量存在正相关关系,与平均气压存在负相关关系,回归分析差异有统计学意义(P<0.005)。伊蚊密度较高的场所是废品收购站、花鸟市场、公园、工地,密度的差异有统计学意义(P<0.005)。伊蚊孳生地类型主要是小型积水容器,孳生繁育的适宜小气候环境和栖息条件为丘陵地形、毗邻水系、有废弃物或有植被覆盖。结论南宁市白纹伊蚊分布广泛,常年有活动,5—9月存在登革热输入和本地传播风险,应加强登革热监测预警,防止疫情发生流行。
Objective To master the seasonal fluctuation and its influencing factors of dengue vector in Nanning,andprovide scientific basis for the control of dengue fever. Methods The surveillance of Aedes larvaes were conducted by theBreteau Index（BI） method, standard space index（SSI） method, and Mosquito-oviposition trap index method; the surveillanceof adult Aedes mosquitoes were conducted by the Habitat mosquito-catching method,human-induced stopping method, double-layer accounting method, egg-inducing device method; the viruses carried by Aedes mosquito were detected by RT-PCR andvirus isolation would be conducted if necessary; correlation analyses of the Aedes mosquitoes density withthe regularobservations data from meteorological department, climate and environmental data recorded in real time on site were conducted.Results All the mosquitoes captured in Nanning from May 2015 to April 2018 were Aedes albopictus mosquitoes and type of Aedes aegypti mosquitoes were absence. Dengue viruses were not detected from the Aedes captured. The density of Aedes mosquito fluctuated with the season, and it displayed a high level in the period of May to September. The density of larvamosquitoes was positively correlated with temperature, sunshine time, relative humidity and rainfall, and negatively correlatedwith the average pressure（P〈0.005）.The type of Aedes breeding ground was mainly a small water reservoir. The suitablemicroclimate environment and habitat conditions for breeding were hilly terrain, adjacent water systems, waste or vegetationcover. Conclusions There was a wide range of Aedes albopictus in Nanning,with Aedes mosquito activity all year round.From May to September, dengue fever input and local transmission risks increased, and dengue fever monitoring and earlywarning should be strengthened to prevent epidemic outbreaks.
作者
屈志强
黎祖秋
汤洪洋
凌峰
李萍
罗密芳
石健
QU Zhiqiang;LI Zuqiu;TANG Hongyang;LING Feng;LI Ping;LUO Mifang;SHI Jian(Nanning City Center for Disease Control and Prevention,Nanning,Guangxi 530023 China)
出处
《中国热带医学》
CAS
2018年第10期1007-1011,共5页
China Tropical Medicine
基金
广西壮族自治区卫生和计划生育委员会科研课题(No.Z2015029)
关键词
登革热
媒介
伊蚊
监测方法
dengue fever
vector
Aedes
vector surveillance
