The recent rain will help certain types of mosquitoes breed, but not the kind which carry the West Nile virus.
University of Illinois entomologist Phil Nixon says it’s a common misconception that rain and floods mean more West Nile cases.
“We’ve had our biggest influxes of number of cases of West Nile virus on particularly dry years,” Nixon said. “People get to thinking that well, it’s dry, there’s no mosquitoes. That is the ideal conditions for the Northern House Mosquito, who transmits West Nile virus.”
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Nixon says a different species, the Inland Floodwater Mosquito, is the one which will benefit from this kind of weather. Floodwater mosquitoes pick dry ground to lay their eggs, which are flooded and hatch when the water rises.