A study from the Indian Council of Medical Research-National Institute of Virology has identified varying degrees of permethrin resistance among Aedes aegypti mosquitoes collected from several parts of Pune, raising concerns about the effectiveness of pyrethroid-based vector-control strategies. Researchers examined adult Aedes aegypti collected between February and May 2024 from nine Pune Municipal Corporation wards , including Pashan, Susgaon, Khadki, Yerawada, Warje, Hadapsar, Kondhwa, Kothrud and Dhankawdi. The mosquitoes were subjected to the standard 0.75% permethrin concentration used in World Health Organization susceptibility testing, with survival used to assess resistance.

Resistance was not uniform across the city. Mosquito populations from Khadki, Pashan, Susgaon, Warje, Hadapsar and Kondhwa demonstrated clear resistance, with substantial numbers surviving insecticide…