科研之友
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摘要
Reduction of dengue cases and forecast its risk, and identification of vectors breeding habitats and their abundance is the prime target in any dengue control programme. In this aspect, larval surveys were conducted in four localities in Penang Island between September 2015 to September 2016. The abundance of Aedes mosquitoes and their breeding habitat both indoor and outdoor were recorded. Aedes indices i.e. Container index (CI), House index (HI) and Breteau Index (BI) were calculated for dengue risk, besides the attraction and repulsion (RF) of 5 container type evaluation. Among a total of 2,415 potential habitats examined, 638 were found positive for immature stages of Aedes. A total of 23,319 immatures were collected from the selected areas. Aedes albopictus (93.7%) was the dominant species followed by Aedes aegypti (5.8%) and others (0.5%). Among the 5 container types, plastic type containers were the most productive (45.5%) whereas the natural containers (6.1%) were the least (P < 0.05). High values of Aedes indices showed that all selected localities are at risk of dengue due to high prevalence of Ae. albopictus. Rubber and natural type of containers were the most attractive breeding habitats for vectors of dengue. The results of this study provides an insight to the current distribution of dengue vectors, which may be crucial to the health authorities in vector management programmes in the future.
- 出版日期2018-6
