Fig. 6From: Human biting mosquitoes and implications for West Nile virus transmissionFrequency of human activity observations and total number of mosquitoes collected by type (nuisance and Culex species) (top) combined to create two indices: the nuisance factor (middle) and the WNV added risk (bottom). Detailed information regarding these indices is provided in [6]. WNV, West Nile virusBack to article page