| 邓达,柳朝藩,钱会霖,姜本启,周士兰,刘俊旭,关德海,顾政诚,郑香.用媒介能量定量分析黄淮平原间日疟流行趋势的探讨[J].Chinese journal of Epidemiology,1985,6(2):70-73 |
| 用媒介能量定量分析黄淮平原间日疟流行趋势的探讨 |
| A Quantitative Approach to the Epidemic Trend of Vivax Malaria in Huanghuai Plain by Vectorial Capacity |
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| Abstract: |
| 本文报告用现场观察的媒介能量定量地分析黄淮平原疟疾流行趋势。现场观察点位于江苏省邳县岱山乡。1979和1980两年疟疾发病率分别为7.4%和18.1%,两年媒介能量分别为1.5和4.2.传播季节开始,随着媒介能量的急剧上升,发病率相应地上升,并在媒介能量高峰之后20天出现发病率高峰。通过媒介能量估算的发病率,与实际发病率亦相一致。1980年从居民原虫血症阴阳性转换而推算的寄生虫学接种率为0.00125,同年从媒介能量推算的昆虫学接种率为0.00191,这两种方法推算的接种率所反映的传播强度约当每晚毎千人有1~2人受到传染性接种。调查结果表明主要由中华按蚊叮人率所决定的媒介能量左右着疟疾发病高峰,在当前条件下媒介能量作为这类地区疟疾流行病学定量评价指标是合理的。 |
| English Abstract: |
| The present paper tried to analyse the fluctuating tendency of malaria incidence through vectorial capacity which was calculated in Daishan town-ship, Jiangsu Province, in the eastern part of Huang-Huai Plain. The malaria incidence and vectorial capacity in Daishan township were 7.4% and 1.5 in 1979, 18.1% and 4.2 in 1980 respectively. Both incidence and Vectorial capacity calculated at 20-day interval from July to September revealed similar tendency in fluctuations, and the peak of malaria incidence was just 20 days after the peak of vectorial capacity. The Parasitological inoculation rate which was estimated from the transition of negative and,positive between two consecutive parasitological surveys in 1980 was 0.00125, and the entomological inoculation rate which was mainly determined by vectorial capacity was 0.00191 in the same year. Taking into account two inoculation rates, it could be deduced that there were one or two persons receiving an infective inoculation per thousand per night during the transmission season in this area. It is concluded that the vectorial capacity which is mainly determined by the man-biting rate of Anopheles sinensis is the critical factor responsible for the fluctuation of malaria incidence in Huang-Huai Plain. |
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