Levels of house index accumulated in Tanrabad® application and risk of dengue transmission in urban areas
Keywords:
dengue, house index, urban, TanrabadAbstract
Introduction: Dengue is an Aedes borne disease that has highly transmitted in urban areas. Prevention and control measures mostly focus on vector control and source reduction. This study demonstrates the usefulness of house index accumulated in Tanrabad® application to assess risk of dengue transmission during 4- week period after conducting larva survey in urban area.
Methods: The Ecological study was conducted in the study areas included cities, municipalities, and special administrative districts. Poisson regression was applied to determine the association of House index ( HI) and dengue incidence using Incidence Rate Ratio (IRR) และ 95% confidence interval (95% CI).
Results: In urban areas, HI significantly related to dengue incidence during 4-week period after conducting larva survey with IRR of 1.031 (95%CI 1.028–1.032). Moreover, the levels of HI, 5% < HI ≤ 10%, 10% < HI ≤ 20%, and HI > 20% would raise dengue incidence to be 1.807, 3.045, and 4.479 times higher than the incidence while HI ≤ 5%.
Conclusion: To control dengue effectively, HI not more than 5% should be applied particularly in urban areas which dengue rapidly transmits. Larva survey should be conducted and larva index should be recorded systematically to utilize the data for dengue risk assessment and guide the prevention and control measures.
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