Phân bố muỗi Aedes aegypti tại một số điểm nguy cơ cao mắc sốt xuất huyết Dengue tại Hà Nội năm 2011

Dengue haemoragic fever (DHF) is an infectious disease with high morbidity and mortality rate. The main transmission vector DHF in urban areas is Aedes aegypti. Hanoi is a big city with many favorable factors for Ae. aegypti development, therefore it is at high risk of mosquito-borne diseases. The results of distribution surveys in 2011 in areas at risk of DHF in Hanoi showed that the DI index was 0.15 (0-0.26); AHI 12.12 (0-19.33); HI 12.50 (040). B116.13 (5 - 84), BI 20 (in 7 districts). The main sources of Aedes larval were water tanks 500 L (43.62 percent), aquariums (33.47 percent), buckets, barrels, pots or discarded containers, etc. The mosquito indicators when having patients reported were DI 0.1 (0 - 0.25); AHI8.32 (0-17.50); HI 13.42 (0 - 30). However, B123.04 (7.5 - 155) did not increase as compared to that in the regular monitoring period.