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目的：探讨基本消灭马来丝虫病地区残存微丝蚴血症者的流行病学意义。方法：不采取任何防治措施，对居民微丝蚴率降至0．97％的水洼村连续进行了10年纵向监测。结果：（1）1982年查出的18例微丝蚴阳性者在1～8年内先后转阴，在观察期间未发现新的微丝蚴血症者；（2）从1984年开始丝虫病的传播强度降至为0。结论：当居民微丝蚴率降至1％以下时，少量低密度微丝拗血症者在流行病学上已不起传播作用。
OBJECTIVE: To investigate the epidemiological significance of the residual microfilaremia in areas where Malay filariasis is basically eliminated. Methods: Without any prevention and control measures, we conducted a series of longitudinal monitoring for 10 years in the village of Shuiwa, where the rate of microfilaria decreased to 0.97%. Results: (1) 18 cases of microfilaria positive in 1982 were negative in 1 ~ 8 years and no new microfilaremia was observed in the observation period. (2) Filariasis The intensity of transmission dropped to zero. Conclusion: When the residents microfilaria rate down to below 1%, a small amount of low-density micro-retinitis obliterans in epidemiology has been unable to play a role in transmission.