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本文报告了1985～1993年29例不同密度班氏微丝蚴血症者血中微丝蚴自然阴转及在当地传播丝虫病的作用。结果显示13例62ul血5条以下微丝蚴血症者3年内全部阴转;6例6～10条者5年内全部阴转;10例11条以上者3年内无1例阴转,密度由平均23条降至9条。5年内阴转6例,余4例密度降至4条,7年内全部阴转。微丝蚴密度高低与蚊媒感染率呈正相关。持续7年的观察未发现新感染微丝蚴血症者,蚊媒感染率巳持续4年为0,当地人群血清中丝虫抗体水平已降至非流行区人群抗体水平,表明当地丝虫病的传播已被阻断。
This article reports the natural overcast of microfilariae in blood and the transmission of filariasis in 29 cases of microfilaremia with Bandeis filamentous filariasis from 1985 to 1993. The results showed that 13 cases of 62ul blood 5 following microfilarectasis were all within 3 years of negative conversion; 6 cases of 6 to 10 were all within 5 years of negative conversion; 10 cases of 11 or more within 3 years without a negative conversion rate from An average of 23 dropped to 9. 6 cases of vaginal in 5 years, more than 4 cases of density reduced to 4, 7 years all the negative. Microfilaria density and mosquito vector infection rate was positively correlated. After 7 years of observation, no newly-infected microfilaremia was found, and the mosquito-borne infection rate had lasted for 4 years to 0, and the local population of filarial antibodies in serum had dropped to antibody levels in non-endemic areas, indicating that local filariasis The spread has been blocked.