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在西萨摩亚亚周期型班氏丝虫病流行区,低密度微丝蚴血症是指微丝蚴密度为1—20条/ml的丝虫病患者。在28个村7 430人的调查中,用核孔膜过滤法检出微丝蚴血症者381人,其中低密度微丝蚴血症者90人(23.6%)。随着村内微丝蚴阳性率的增高,低密度微丝蚴携带者占微丝蚴阳性总人数的比例减少。低密度微丝蚴血症在20岁以下年龄组(平均占35.9%)比20岁以上的年龄组(平均占21.1%)明显地多,但在性别上无差异。以波利尼西亚伊蚊叮咬微丝蚴密度超过500条/ml的携带者,感染率可达50%以上,
In the West Samoa cycle-type Bancroftian filariasis endemic area, low-density microfilaremia refers to filariasis patients whose microfilariae density is 1-20 per ml. In a survey of 7430 people in 28 villages, 381 microfilariae were detected by nuclear membrane filtration, of which 90 (23.6%) were low-density microfilaremia. With the increase of the positive rate of microfilariae in the village, the proportion of carriers with low density of microfilariae in the total positive number of microfilaria decreased. Low-density microfilaremia was significantly greater in the group under 20 years of age (35.9% on average) than in those over 20 years of age (21.1% on average), but there was no gender difference. To Polynesia Aedes bites Microfilaria density of more than 500 / ml carriers, the infection rate of up to 50% or more,