Ugandan mosquitoes are resistant to DDT – study

SEVERAL mosquito varieties in Uganda have a strong resistant gene (kdr) against several insecticides including DDT, a new report has disclosed.

DDT is under consideration for use in spraying the inside of the walls of residential houses to control malaria causing mosquito population. Dr Ambrose Talisuna, Assistant Commissioner Epidemiological Surveillance in the Ministry of Health presented the findings at a senior doctors lecture on the malaria situation in the country on April 19, in Kampala.

“Apart from mosquitoes in Arua and Jinja, more than 25 % of the mosquitoes in other parts of the country such as Apac, Tororo, Kanungu and Kyenjojo have this gene,” Talisuna said. He advised that an assessment for the levels of resistance of the different insecticides to mosquitoes needs to be conducted to guide the country on the best option to use for spraying.” Talisuna said their data suggest that the most effective option in spraying is deltamethrin, followed by permethrin then DDT.

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