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目的掌握疟疾传播蚊种及密度,为评估疟疾传播风险提供依据。方法 2005~2010年采用人诱半通宵加清晨50顶蚊帐搜捕法监测蚊种及密度,2012~2016年采用诱蚊灯全通宵方法监测蚊种及密度,对疟疾传播媒介和疫情监测资料进行分析。结果 2005~2016年未发现中华按蚊以外的其他按蚊。2005~2010年中华按蚊叮人率分别为34.882、15.112、18.714、14.794、2.814和3.048只/人·夜,2012~2016年中华按蚊平均灯诱密度分别为0.400、0.250、0.250、0.250、0.250只/灯·夜。疟疾病例主要集中在2005~2010年,期间共报告7 804例,除1例输入性恶性疟外,均为本地感染间日疟,病例以7~10月份为多。最后1例本地感染间日疟病例发生于2012年10月,2013~2016年输入6例恶性疟。结论埇桥区仍是中华按蚊地区,蚊媒密度较低,存在疟疾病例输入风险,但导致输入性疟疾病例续发传播的风险不大。
Objective To grasp the mosquito species and density of malaria transmission and provide evidence for assessing the risk of malaria transmission. Methods From 2005 to 2010, 50 species of mosquito nets were trapped overnight in the morning and 50 mosquito nets were used to monitor the mosquito species and density. Mosquito species and density were monitored by the mosquito lamp overnight method from 2012 to 2016. The malaria transmission media and surveillance data were analyzed . Results No Anopheles sinensis other than Anopheles sinensis was found between 2005 and 2016. Anopheles sinensis bite rate in 2005 ~ 2010 were 34.882, 15.112, 18.714, 14.794, 2.814 and 3.048 / person / night respectively. From 2012 to 2016, the average light trap density of Anopheles sinensis were 0.400, 0.250, 0.250 and 0.250, 0.250 lights / night A total of 7 804 cases of malaria were reported during the period from 2005 to 2010, except for one case of imported falciparum malaria. Both were locally infected with Plasmodium vivax, with more cases being reported from July to October. The last case of local infection with P. falciparum occurred in October 2012 and six cases of falciparum malaria were imported between 2013 and 2016. Conclusion Baqiao District is still an Anopheles sinensis area with low mosquito density and the risk of malaria cases input, but the risk of subsequent transmission of imported malaria cases is insignificant.