Assessing Dengue Vector Seasonality and Insecticide Susceptibility: Findings from an Ovitrap Survey in Colombo District, Sri Lanka

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Observational analysis reveals seasonal patterns and insecticide susceptibility of Aedes mosquitoes, highlighting control strategies.

Dengue vector populations exhibited significant seasonal fluctuations, with Ae. aegypti peaking in March and May.
Ovitraps collected over 6,000 Ae. albopictus and nearly 1,000 Ae. aegypti, indicating high vector density.
Ae. albopictus showed resistance to lower concentrations of Malathion, but Ae. aegypti was fully susceptible to both Malathion and Deltamethrin.
Findings emphasize the importance of indoor breeding patterns of Ae. aegypti for effective dengue control measures.

Sarathchandra et al. (2025) studied this question.

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