Epidemiological investigations demonstrate that malaria is endemic in the state.
Kheda district showed the highest incidence of malaria in Gujarat state, with Nadiad taluka consistently being the most affected area. Occasional deaths have occurred due to falciparum malaria, although the area is constantly sprayed with residual insecticides. A. culicifacies is the main vector of rural malaria. It breeds in stagnant water in fallow fields, rice fields, irrigation channels, field channels and seepage water collection sites. During the monsoon season, high humidity favours malaria transmission, as the longevity of A. culicifacies increases.