鲁南郯城地区班氏丝虫病传播情况分析  

AStudyonTransmissionofBancroftianFilariasisinTanchengCounty,SouthShandongProvince

作　　者：王培义[1] 任正轩[1] 张延记 尹承舜 高长兰[1] 盛琦[1] 赵中平[1] 万功群[1] 曹新春[1] 王洪法[1] 

机构地区：[1]山东省寄生虫病防治研究所

出　　处：《中华预防医学杂志》1996年第3期136-138,共3页Chinese Journal of Preventive Medicine

基　　金：联合国开发计划署;世界银行;世界卫生组织热带病研究培训特别规划处资助

摘　　要：为探清班氏丝虫病基本消灭后的传播动态及流行趋势，在鲁南原班氏丝虫病高度流行区的郯城县胜利乡花园村，从基本消灭后第五年（１９８４年）开始，不采取防治措施，纵向观察１０年。结果，微丝蚴率由０．５６％降至０．１２％，残存微丝蚴血症者和新检出微丝蚴血症者分别为９例和６例，其中有８例和５例陆续自然转阴。微丝蚴血症者血中ＩｇＧ４抗体阴转率为８８．８９％，蚊媒自然感染率逐年降低，第十年未再发现蚊媒幼丝虫，年传播潜势亦由３．４７降至０。蚊媒叮人率在不用蚊帐和使用蚊帐人群，每人每夜分别为２４．１～５２．５及１３．５～２１．０只情况下，当地丝虫病趋于终止传播。AlongitudinalstudywasconductedtoexploretransmisiondynamicsandepidemictrendofbancroftianfilariasisinHuayuanVilage,ShengliTownship,TanchengCounty,ShandongProvince,aprevioushighlyendemicareaofit,from1984,thefifthyearafteritspreliminaryeradica-tion,to1993,withoutanycontrolmeasuresbeingtaken.Resultsshowedproportionsofresidentswithmicrofilaremiadecreasedto0.12%in1993from0.56%beforethestudy.Eightoftheninemi-crofilariacarriersbeforethestudybecamenegativespontaneously.Sixnewmicrofilariacariersweredetectedduringthestudyperiod,butfiveofthemconvertednegativeinthreeorfouryears.NegativeconversionrateofbloodIgG4inmicrofilaremiacaseswas88.89%bytheendofthestudy.Naturalinfectionrateinmosquitoesdroppedyearbyyear,with0.21%,0.19%and0.06%for1984,1985and1986,respectively,andnofilariallarvaewasfoundinthemin1993andnaturaltransmissionpo-tentialdroppedfrom3.47tozero.Itsuggestedthethresholdfortransmissionoffilariasiswasnotreachedandthetransmisionwasclosetotheend,withtheratesofmosquitobitingof24.1～52.5and13.5～21.0timesperperson,pernight,forthoseusingornon-usingmosquitonet,respective-ly.

关 键 词：丝虫病 微丝蚴血症 流行病学 郯城 

分 类 号：R532.15[医药卫生—内科学]