All of the following factors are responsible for resurgence of malaria, Except -
Resurgence of Malaria in India has occurred due to Drug resistance Vector resistance Mutation in Parasite Use of bed-nets (primary level of prevention) is in fact likely to reduce incidence of malaria Ref: Park 22th edition Pgno : 716-718
Drug Resistance in Parasite
Insecticide Resistance in vectors
Antigenic mutations in parasite
Use of bed nets
Communicable diseases