西盟县1991～2009年疟疾疫情监测结果分析

Result of blood examination of febrile malaria patient in Ximeng County from 1991 to 2009

目的分析1991～2009年西盟县疟疾发病及流行情况,评价发热病人疟疾血检措施的落实情况。方法将历年收集的疟疾疫情资料,现症病人、发热病人血检监测结果、居民带虫结果及相关流行病学资料进行回顾性统计分析。结果1991～2009年共报告疟疾疫情病例7 760例,其中间日疟7 271例,占93.70%,1991年发病率为39.02%;2009年发病率为1.80%;2009年与1991年发病率比较,下降95.39%。发热病人疟疾血检阳性8 216例,阳性率5.43%,其中间日疟7 670例,占93.35%;西盟县以间日疟流行为主。阳性病例中当地居民当地感染占88.49%;以当地感染为主。疟疾病例数,居民带虫率、疟疾病灶点数均以1998、1999年为最高;当地居民外出人员的疟疾感染率为6.02%,外来人口血检阳性率为20.81%,其中外地和境外感染输入阳性率为24.76%。病灶点2009年与1991年相比下降93.33%。结论近年来西盟县的疟疾发病率呈大幅下降,疟疾流行严重的态势得到了有效控制,但鉴于西盟县存在适宜传疟媒介繁殖的自然条件和以内源性疟疾感染为主的实际情况。

Objective To analyze the incidence and prevalence of malaria in Ximeng country from 1991 to 2009 and the results of blood examination of febrile malaria patients.Methods The data concerning malaria prevalence and control in Ximeng County from 1991 to 2009 were collected and analyzed.Results The total number of malaria case reported from 1991 to 2009 were 7 760,including 7 271 vivax malaria cases（93.70%） with an average incidence rate of 39.02‰.The incidence rates in 1991 and 2009 were 39.02% and 1.80%,a drop of 95.39%.The positive number of febrile malaria cases was 8 266,includng 7 670 vivax malaria cases,accounted for 93.39% with a positive rate of 5.43%.Plasmodium vivax malaria was prevalent in Ximeng country.From 1991 to 2000,the number of the infection of local residents working out of the native area was 6.02%,and the infection rate in population from outside was 20.80%.Conclusion Recently malaria incidence in Ximeng county was decreased significantly.This is closely associated with the effective implementation of blood examination of febrile patient.