2.4 Entomological survey
Entomological survey was conducted in the affected villages following standard method [15].
Indoor resting adult mosquitoes were collected in the morning from 6 am to 9 am from randomly selected 30% of households and cattle shade using sucking tube. Each house was surveyed for 15 minutes.
The mosquitoes were identified by appropriate keys [16] and Per Man Hour Density (PMHD) of each species of mosquitoes
were calculated (PMHD= Total no. of mosquitoes collected /No. of person x Time spent in hours).