A preliminary study on the infestation indices of dengue vector, Aedes aegypti (Diptera: Culicidae) in Taif, Saudi Arabia
Author(s): Hamdy A Al Ashry, Abdullah S Al Ghamdi, Abdullah Z Al Shreef and Mohamed A Kenawy
Abstract: Surveys were carried out (August to November; 2018 and 2019) in 12 residential districts of Taif city to examine the overall entomological indices (House Index, HI; Container Index, CI and Breteau Index, BI) for Aedes aegypti larvae. A total of 682 houses were inspected of which 193 were positive and of 1139 containers, 370 were found positive for larval breeding. The calculated indices were 28.3% HI, 32.5% CI and 54.3% BI with significantly higher values in 2019 period (42.2% HI, 42.7% CI and 77.0% BI, P<0.001) than in 2018. Significantly higher indices were observed for the northern part (37.7% HI, 39.9% CI and 66.7% BI, P˂0.05) than those for the other parts of the city. The reported dengue cases during the study periods coincided with the difference in larval abundance in the different parts of Taif. The abundance of breeding containers resulting from vast and extensive constructions (that require much of water storage) is the factor responsible for the abundance of larvae (high indices) than temperature and humidity. The obtained results may be of importance for determining the risk of dengue transmission and planning of an efficient control program. However, further intensive studies are required to examine the status of the vector/ dengue fever in Taif city/governorate.
How to cite this article:
Hamdy A Al Ashry, Abdullah S Al Ghamdi, Abdullah Z Al Shreef, Mohamed A Kenawy. A preliminary study on the infestation indices of dengue vector, Aedes aegypti (Diptera: Culicidae) in Taif, Saudi Arabia. Int J Mosq Res 2020;7(4):49-53.