Malaria transmission potential by Anopheles sinensis in the Republic of Korea
Malaria transmission potential by Anopheles sinensis in the Republic of Korea
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DOI：
10.3347/kjp.2001.39.2.185
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发表时间：
2001-06-01
影响因子：
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通讯作者：
Lee, Kyung-Ro
中科院分区：
文献类型：
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作者：
Lee, Hee-Il;Lee, Jong-Soo;Lee, Kyung-Ro
为了利用媒介能力评价决定间日疟传播水平的因素，2000年6月至8月进行了昆虫学调查。从坡州人饵收集的6个晚上，人叮咬率（ma）计为87.5叮咬/人/夜。中华按蚊在人饵采集中的胎次在41%~ 71%之间波动，平均为48.8%。随着时间的推移，胎次逐渐增加，6月份为35.2%;根据这一比例，可以估算出日存活率的概率。中华绒螯蟹的生殖周期为3天，其平均感染寿命为0.79，其平均感染寿命为0.073。使用ELISA进行血粉分析以确定血粉来源。只有0.8%的血液来自人类宿主。我们可以得出结论，安。中华绒螯蟹嗜动物性强（奶牛61.8%）。疟疾在该地区非常不稳定（稳定指数< 0.5）。根据这些数据，确定向量容量（VC）为0.081。尽管人类叮咬率（ma）很高，但由于人类血液指数低，疟疾传播的可能性非常低。因此，我们可以得出结论，疟疾的传播由一个。中华绒螯蟹的流行是由于其种群密度高，而不是由于其传播潜力大。因此，我们需要更多的努力来减少病媒种群和病媒-人接触，以在韩国根除疟疾。
To evaluate the factors that determine the transmission level of vivax malaria using vectorial capacity, entomological surveys were conducted from June to August, 2000. From 6 nights of human-bait collection in Paju, the human biting rate (ma) was counted as 87.5 bites/man/night. The parity of Anopheles sinensis from human baiting collections fluctuated from 41% to 71% (average 48.8%) of which the rate gradually increased as time passed on: 35.2% in Jun.; 55.0% in July; 66.2% in Aug. From this proportion of parous, we could estimate the probability of daily survival rate of An. sinensis to be 0.79 assumed with 3 days gonotrophic cycle and the expectancy of infective life through 11 days could be defined as 0.073. Blood meal analysis was performed using ELISA to determine the blood meal source. Only 0.8% of blood meals were from human hosts. We could conclude that An. sinensis is highly zoophilic (cow 61.8%). Malaria is highly unstable (stability index < 0.5) in this area. From these data, vectorial capacity (VC) was determined to be 0.081. In spite of a high human biting rate (ma), malaria transmission potential is very low due to a low human blood index. Therefore, we could conclude that malaria transmission by An. sinensis is resulted by high population density, not by high transmission potential. For this reason, we need more effort to decrease vector population and vector-human contract to eradicate malaria in Korea.