武穴市2005～2011年疟疾流行病学监测分析

目的分析疟疾发病与流行因素关系,掌握疟疾流行动态,指导疟疾防控工作。方法开展疟疾病原学监测和媒介监测,收集整理2005～2011年监测资料,进行描述性流行病学分析。结果 2005～2011年武穴市共监测到疟疾发病10例,发病时间主要分布在5～10月(占60%),年发病率为0～0.52例/10万,年平均发病率0.19例/10万;2005～2008年共检测发热患者22376例,血检疟原虫阳性3例,阳性率1.34例/万,人群抗体水平检测800例,未检出抗体阳性者;2005～2011年,人工帐诱按蚊密度平均为12.84只/人·h,居民蚊帐内按蚊密度平均为0.25只/帐(0.17只/人),平均叮人率13.01只/人·夜。人工帐诱按蚊密度高峰在7月上旬,平均密度为31.93只/人·h,居民蚊帐内按蚊密度高峰在6月下旬,平均密度为0.45只/帐,9月上旬又形成一个小高峰,平均密度为0.30只/帐。结论该市属中华按蚊为媒介的低疟区,人群对疟疾无免疫力普遍易感,传疟媒介密度高,疟疾的传播因素未发生改变,若有外来疟疾感染者输入,易发生疟疾局部暴发流行,应加强疟疾监测及时发现和处置疟疾疫情,做好个人防护,防止疫情播散。

Objective To analyze malaria incidence and epidemic factors of relationship, grasp malaria epidemic dynamics, to guide the malaria prevention and control work. Methods To carry out the malaria pathogen monitoring and media monitoring, collection of monitoring data from 2005 to 2011, desen＇ptive epidemiologieal analysis. Results From 2005 to 2011, this city were monitored to malaria morbidity in 10 eases, the onset time is divided in 5-10 month, accounting for 60%, the annual incidence rate was 0-0.52 / one hundred thousand, the average annual incidence was 0.19/ one hundred thousand; From 2005 to 2008, a total of 22376 patients with fever were detected, the blood test of Plasmodiurn faleiparum was positive in 3 cases, the positive rate was 1.34/10000. Detection of antibody level in the population 800 people, no detectable antibody positive; from 2005 to 2011, artificial baited Anopheles density averaged 12.84/personohour, residents in the density of Anopheles mosquito net average of 0.25 per account, average man-biting rate 13.01/person/night. Artificial baited Anopheles density peak in early July, the average density of 31.93/person-hour, residents in the density of Anopheles mosquito net peak in late June, the average density of 0.45/account, in early September and formed a small peak, the average density of 0.30/account. Conclusion The city belongs to the medium of Anopheles sinensis in low endemic areas, and the crowd without Immunity generally susceptible to malaria, malaria vectors density is high, the spread of malaria factors does not change. If a foreign malaria infected input, easy occurrence of malaria outbreak, We should strengthen the timely detection and treatment of malaria surveillance of malaria epidemic situation, personal protection, prevent the epidemic spread.