system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
The following are DDT resistant except -
assistant
The correct answer is  Resistance to DDT has not been demonstrated in Phlebotomus. Organochloride resistance is divided into Resistance to DDT and analogues Resistance to HCH-Dieldrin group of insecticides Park's Textbook of Preventive and Social Medicine, 25th Edition, Pg 845