中国媒介生物学及控制杂志

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丝虫病控制前后蚊媒自然感染情况调查分析

张继铭1; 曾玉林1; 陆志明2; 陈忠3; 张庭飞4   

  1. 1江苏省盐城市卫生防疫站224002; 2江苏省阜宁县卫生局; 3江苏省滨海县卫生防疫站; 4江苏省响水县卫生防疫站
  • 出版日期:1995-06-20 发布日期:1995-06-20

An Investigation on the Natural Infection of Vector Mosquito of Filariasis While Around About Being Controlled

Zhang Ji-ming;et al   

  1. Sanitary and Anti-epidemic Station of Yancheng, Yancheng 224002
  • Online:1995-06-20 Published:1995-06-20

摘要: 1980~1983年,在班氏丝虫病中度流行区的14个村舍,解剖蚊媒32345只,自然感染率3.31%。结果表明:淡色库蚊为班氏丝虫病的传播媒介;微丝蚴进入蚊体后,可有52.29%发育至感染期幼虫;蚊媒自然感染率多随人群微丝蚴率和感染者微丝蚴平均密度的高低而升降。从有的村不呈相应升降和人群、蚊媒感染率出现自然下降的情况提示,在研究阻断丝虫病的传播阈值时,除病原生物学外,还须结合社会和自然因素综合考虑。在不同地区和不同的流行阶段,这项阈值应该是相应的,而非相同的。1987年达到基本消灭丝虫病标准后,当年自然感染率降到0.03%(1/4037);1990~1992年为0.18%(19/10744),虫期均系脱鞘微丝蚴;1993年已无阳性蚊发现(0/2020),显示传播已阻断。

关键词: 班氏丝虫病, 淡色库蚊, 自然感染率

Abstract: Dating from 1980~1983,an investigation had been carried out in 14 vallages of medium endemic area of bancroftian filariasis.The natural infectivity rate obtained by vector mosquito of investigation was 3.31% (1070/32 345).The results indicated that Culex pipiens pallens investigated was a good insect-vector for Wuchereria Bancrofti. 52.29% microfilariae after entering the mosquito's body may develop into infective larvae in the mosquito. Natural infection rate in vector mosquitoes ran in parallel with the microfilariaemia rate and the density of microfilariae in host blood.On epidemic filariasis control in 1987,the natural infection rate declined to 0. 03% (1/4 037).In 1990~1992,the infection rate 0.18% ( 19/17 044).Natural infection of Culex pipiens pallens was not found in 1993( 0/2 020),