All of the following factors contribute to Resurgence of malaria, Except-

Ans. is 'a' i.e., Drug resistance in host Factors contributing to resurgence of malaria o Increasing insecticide resistance in the vector o Increasing and often multiple drug resistance in the parasite o Increasing instability in populations with large & unpredictable population migration Urbanization and formation of new slums Movement of reference population Travel by non-immune expaities o Increasing atmospheric carbon accumulation increasing the climatic suitability for transmission. o Deteriorating public health system in endemic countries. o Diversion offund.s/Inadequate funding for malaria control o Several environmental factors including cultivated land, irrigation intensity, cropping intensity, rainfall, construction and repair of canals & roads, shallow eah wells, ponds flooded fields etc.