Transmission dynamics of Wuchereria bancrofti in East Sepik Province, Papua New Guinea
Transmission dynamics of Wuchereria bancrofti in East Sepik Province, Papua New Guinea
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DOI：
10.4269/ajtmh.1996.54.577
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发表时间：
1996-06-01
影响因子：
3.3
通讯作者：
Alpers, M
中科院分区：
文献类型：
--
作者：
Brockarie, M;Kazura, J;Alpers, M
班克罗夫特丝虫病是巴布亚新几内亚许多地区的地方病。本研究描述了巴布亚新几内亚东塞皮克省Dreikikir附近的昆虫学传播指标。共检获库蚊、曼蚊1735只，未发现丝虫病媒蚊。相比之下，点状按蚊和安氏按蚊。按蚊孳生率为7.3%，平均每只感染1 ~ 3期幼虫2.7只。在相距50公里以内的5个村庄，传播指数差别很大。年咬人率为4,789至48,020人/年；年感染咬人率15 ~ 836/人/年；年传播潜力31 ~ 2340只/人/年。各村的月传播潜力和月感染咬伤率差异显著，在旱季河床形成水坑的村庄，传播指数最高。这些数据表明，该地区丝虫病传播强度和时间格局存在较小的区域差异，食蚊不是该地区重要的班氏西蝽病传播媒介。
Bancroftian filariasis is endemic in many areas of Papua New Guinea. This study describes the entomologic indices of transmission near Dreikikir in East Sepik Province, Papua New Guinea. A total of 1,735 culicine mosquitoes, including Culex and Mansonia species, were dissected, but none were infected with filarial larvae. In contrast, Anopheles punctulatus and An. koliensis were found to be potential vectors: 7.3% of Anopheles were infected and the mean number of first- to third-stage larvae per infected mosquito was 2.7. Transmission indices varied significantly in five villages located within a 50-km radius of each other. Annual biting rates ranged from 4,789 to 48,020 bites/person/year; annual infective biting rates from 15 to 836/person/year; and annual transmission potential from 31 to 2,340 third-stage larvae/person/year. Monthly transmission potential and monthly infective biting rate varied significantly in each village, with the highest indices of transmission observed in villages nearest sites where puddles formed in river beds during the dry season. These data indicate that there is small area variation in the intensity and temporal pattern of filariasis transmission and that culicine mosquitoes are not important vectors of W. bancrofti in this area.