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- W4255094493 abstract "Abstract BACKGROUND: Dengue, yellow fever, chikungunya and Zika are among the most important emerging infectious vector-borne diseases worldwide. In the Democratic Republic of Congo (DRC), increases in cases of dengue and outbreaks of yellow fever and chikungunya have been reported since 2010. The main vectors of these arboviruses, Aedes aegypti and Aedes albopictus , have been reported in DRC, but there is a lack of detailed information on their presence and spread to guide disease control efforts.METHODS: In 2018, two cross-sectional surveys were conducted in Kinshasa province (DRC), one in the rainy (January/February) and one in the dry season (July). Four hundred houses were visited in each of the four selected communes (N’Djili, Mont Ngafula, Lingwala and Kalamu). Within the peri-domestic area of each household, searches were conducted for larval habitats which were then surveyed for the presence of Aedes larvae and pupae. A subset of the immature specimens were reared to adults for morphological identification followed by DNA-barcoding of the specimens to validate identifications.RESULTS: The most rural commune (Mont Ngafula) had the highest pupal index of 246 (20) pupae/100 houses and a Breteau Index of 82.2 (19.5)/100 houses, while this latter was 21.5 (4.7), 36.7 (9.8) and 41.7 (7.5) in Kalamu, Lingwala and N’Djili in the rainy (and dry) season, respectively. The House Index was on average across all communes 27.5% (7.6%); and the Container Index 15.0% (10.0%) in rainy (and dry) season, respectively. The vast majority of Aedes positive containers were found outside the houses (adjusted OR 27.4 (95%CI 14.9-50.1)). During the dry season, the most productive containers were the ones used for water storage, whereas in the rainy season trash and tires constituted key habitats. Both Ae. aegypti and Ae. albopictus were found. Anopheles larvae were found in different types of Aedes larval habitats, especially during the rainy season. CONCLUSIONS: . In both surveys and in all communes, the larval indices (BI) were higher than the arbovirus transmission threshold values established by the World Health Organization. Management strategies for controlling Aedes in Kinshasa need to target outdoor spaces for larval habitats destruction or reduction." @default.
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- W4255094493 date "2020-12-29" @default.
- W4255094493 modified "2023-10-01" @default.
- W4255094493 title "High Aedes spp. larval indices in Kinshasa, Democratic Republic of Congo" @default.
- W4255094493 doi "https://doi.org/10.21203/rs.3.rs-37427/v3" @default.
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