摘要
山东省基本消灭丝虫病后,于1981～1989年在济宁等10个市地63个县区居民血检共3527316人次,检出微丝蚴血症3348人,微丝蚴阳性率为0.09％,晚期症状与体征调查1926229人,查出晚期病例17425人,患病率为0.9％。各地虫株均为班氏丝虫。残存病例仍集中在原重度和中度流行的鲁南一带,呈点状分布。淡色库蚊是主要传播媒介。蚊虫自然感染率、微丝蚴率和微丝蚴密度呈逐年下降趋势。象皮肿和鞘膜积液患者明显较防治前减少,唯乳糜尿有上升。微丝蚴率和晚期患病率男性高于女性,并差异非常显著;微丝蚴率以31～50岁最高,晚期患病率从30岁开始随年龄增长而增高,60～69岁达高峰,70岁以后逐渐减少。
In the control areas of filariasis in Shandong province, the epidemiological surveys were conduc- ted in 63 counties of 10 cities or districts from 1981 to 1989. Microscopic examination of blood films was performed in 3 527 316 persons. The 3348 were found positivity with microfilariae, tho positve rate being 0.09%. Among 1 926 229 persons examined, 17 425 cases were found as advanced stage patients, and the morbidity rate was 0.9%. Wuchereria bancrofti was the only species found in the survey. Most cases occurred in previously hyper-and moderately endemic areas, appearing sporadic distribution. Culex pipiens Pallens was the chief vector of filariasis. Mosquito infection rate, microfilariemic rate and the density had the natural descending tendency in the control areas. The cases of elephantiasis and hydroceole had reduced mark- edly, comparing with control, but new cases of chyluria continued to increase after control. Micro- filariemic rate and morbidity rate of chronic fi- lariasis were much higher in males than in females (P<0.01). The microfilariemic rate was the highest in 31--50 years old group and prevalence rate of chronic filariasis increased with the age above 30, and reached to the highest in 60--69 but decreased after 70 years old.
基金
本项研究得到联合国开发计划署/世界银行/世界卫生组织热带病研究培训特别规划处部分支持
关键词
班氏丝虫
微丝蚴
淡色库蚊
Muchereria bancrofti Microfilariam Culex pipiens Pallens
