How do people get infected with WNV?
A. People become infected by the bite of a mosquito infected with WNV. Mosquitoes get WNV from birds. Most mosquito bites will not transmit the disease, but it only takes the bite of one mosquito carrying the WNV to potentially cause an infection. There is an incubation time of 5-15 days between the time a person is bitten and the onset of illness.