| 宋觉民,马柯.邹县丝虫病流行病学监测报告[J].Chinese journal of Epidemiology,1983,4(2):110-112 |
| 邹县丝虫病流行病学监测报告 |
| Epidemiology & Surveillance of Filariasis in Zou County |
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| Abstract: |
| 1958年前,邹县居民微丝蚴阳性率高达22.2~30.6%。经全面普查普治,阳性率显著下降。1974年对381,313人查血考核,微丝蚴阳性率下降至0.08%,基本上消灭了丝虫病。自1975年以来,对丝虫病传染源进行了监测,每年选原微丝蚴阳性率较高的3~5个公社的3~5个大队3,000人左右,进行普查,作厚血片查微丝蚴,结果表明,丝虫病基本消灭后残存传染源为以往历次曾检出的原微丝蚴血症病人、新迁入带虫者和历次查血漏查者。经过防制,人房蚊虫密度较低,平均为1.0~3.1只/人工刻,丝虫病传播已得到控制。对蚊媒传播丝虫血内低密度微丝蚴“阈值”进行了探讨,血微丝蚴密度低于1条/120立方毫米(6滴),对传播丝虫病意义不大。 |
| English Abstract: |
Before 1958, it was observed that ths infective rate of microfilaria larva among the residents in Zou County was 22.2-30.6%.As a result of mass screening & a county-wide treatment in 1958, the rate of infectivity decreased sharply. In 1974, blood samples from 381,313 persons were tested for the larvae. The percentage of microfilaria positivity dropped 0.08% and filariasis was coming to an end locally, Since 1975, a surveillance of the source of filariasis has been carried out. Every year, 3,000 persons from 3一5 brigades among 3—5 people’s communes where the infective rate with microfilaria used to be high, were screened for the infectivity.A thick blood smear was made to test for the larvae.The result indicated that the infection with filariasis among people in Zouxian was nearly eliminated with a residual minor sourcs of infection.The first source being those patients who had been found positive for microfilari-aernia repeatedly and second source baing the newly settled filarial carrier.The third source consisted of those were for recovering microfilaria from blood smears during previous investigations. Following epidemic control measures, the indoor density of mosquitoes was coming down to an average level of 1.0—3.1/maapower quarter. It suggested that the spread of filariasis was under control.
In term of the “threshold value” of low-grade microfilariaemie for transmission by mosquitoes, it was revealed that in case the concentration of microfilaria in blood less thaa 1 per 120mm3 (six drops) tits presence seems to play a small role in transmitting filarial infection. |
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