Under India's National Vector Borne Disease Control Programme (NVBDCP), which insecticide class is CURRENTLY recommended for indoor residual spraying (IRS) in high-burden malaria zones as pyrethroid resistance increases?

• A Pyrethroids (deltamethrin/lambda-cyhalothrin)
• B Organochlorines (DDT)
• C Neonicotinoids (imidacloprid)
• D Organophosphates (malathion) ✓

Explanation

With increasing pyrethroid resistance documented in Anopheles vectors, NVBDCP recommends rotation to organophosphates (malathion) or carbamates for IRS in resistance-confirmed areas. DDT (organochlorine) is still used in some areas but faces resistance and environmental restrictions. Neonicotinoids are not approved for vector control IRS in India.

Reference: Park's Textbook of Preventive and Social Medicine, 27th ed.

High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP

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