A mosquito in Collinsville has tested positive for West Nile, shortly after the first Illinois fatality from the disease was reported by state officials.
The Madison County Health Department notified the city of Collinsville that a mosquito trap within the city tested positive for the West Nile virus. No human cases of West Nile have been reported in Collinsville, but earlier this week the Illinois Department of Public Health reported that a person in Kankakee County had died of the disease.
Collinsville city officials said they run a “proactive approach” to treating for mosquitoes, including spraying of insecticide, and placing larvicide wafers in standing water and storm drains. Mosquitoes in Belleville, O’Fallon and Mascoutah tested positive for West Nile earlier in the summer.
Most people infected with West Nile show no symptoms or have mild illness such as fever or headache, usually beginning three to 15 days following a bite. Less than 1 percent of those infected will develop severe illness. Currently the Illinois Department of Public Health reports 37 human cases of the mosquito-borne illness. Last year, there were 155 human cases reported in Illinois, including six deaths.
Residents are encouraged to keep lawns mowed, rain gutters clear, and remove all sources of standing water on the property to combat mosquito populations. People are also encouraged to wear insect repellent and long-sleeve shirts and pants, and to stay indoors between dusk and dawn.