Health & Nutrition Program, Catholic Relief Services Organization, West Darfur State, Sudan.
Integrated Vector Management Unit, Ministry of Health, West Darfur State, Sudan.
East Mediterr Health J. 2021 Dec 28;27(12):1189-1196. doi: 10.26719/emhj.21.073.
Darfur in Western Sudan has the most volatile camps of internally displaced persons (IDPs) and has experienced several outbreaks of dengue, chikungunya and yellow fever.
To determine the prevalence and Stegomyia indices of Aedes aquatic stages in El Geneina town, Western Darfur.
Cross-sectional entomological surveys of immature stages of Aedes were carried out during August-November 2019 in 4 sites with IDP camps and a residential area with no camp.
We searched 17 730 houses, IDP camps and buildings of governmental corporations for Aedes larvae, and 6809 (38.4%) were positive for Aedes aquatic stages. Both Aedes aegypti and Aedes vittatus larvae were found. However, Ae. aegypti constituted > 90% of the larvae. Six positive water containers were recorded: tyres, clay pots, barrels, plastic water tanks, flower vases and old cars: 26% of 92 tyres contained Aedes larvae compared to 23.8% of 21 old cars and 17.1% of 44 198 clay pots. This suggested that clay pots were the main source of Aedes. The results showed high infestation of El Geneina town with Aedes immature stages in all study sites including public buildings and residential areas with no IDP camps. Stegomyia indices varied among study sites, and were more elevated in sites with IDP camps. For all sites, House index = 38.40, Container Index = 11.40, Breateu index = 13.60 and Pupa Index = 27.
Multisectoral response coupled with community participation are urgently needed to reduce the burden of Aedes-borne diseases in the unstable El Geneina town.
苏丹西部的达尔富尔拥有最不稳定的国内流离失所者（IDP）营地，并且经历了几次登革热、基孔肯雅热和黄热病的爆发。
确定西达尔富尔州首府埃尔杰奈纳镇伊蚊水生阶段的流行率和Stegomyia 指数。
2019 年 8 月至 11 月期间，在 4 个有 IDP 营地和一个无营地的居民区进行了伊蚊幼体的横断面昆虫学调查。
我们共搜索了 17730 座房屋、IDP 营地和政府公司的建筑物，以寻找伊蚊幼虫，其中 6809 座（38.4%）呈伊蚊水生阶段阳性。发现了埃及伊蚊和 Aedes vittatus 幼虫。然而，埃及伊蚊幼虫构成了幼虫的 90%以上。共记录到 6 个阳性水容器：轮胎、粘土罐、桶、塑料水箱、花瓶和旧汽车：26%的 92 个轮胎中含有埃及伊蚊幼虫，而 23.8%的 21 个旧汽车和 17.1%的 44198 个粘土罐中含有埃及伊蚊幼虫。这表明粘土罐是埃及伊蚊的主要来源。结果表明，所有研究地点包括没有 IDP 营地的公共建筑和居民区，伊蚊幼虫在埃尔杰奈纳镇的感染率很高。各研究地点的 Stegomyia 指数不同，在有 IDP 营地的地点更为升高。对于所有地点，房屋指数=38.40，容器指数=11.40，布雷特指数=13.60，蛹指数=27。
需要多部门联合应对，并动员社区参与，以减轻不稳定的埃尔杰奈纳镇蚊媒传播疾病的负担。
