Vector Control

West Nile Surveillance and Vector Control Program


The West Nile Virus Surveillance and Vector Control Program provide surveillance of West Nile Virus activity in DeWitt and Piatt Counties.


Through collection and testing of dead birds and by identifying and treating possible mosquito breeding sites, the department monitors the counties for the presence of the virus each year.


Staff at the health department is readily available to educate members of the public about West Nile Virus and prevention. Please contact us at 217-935-3427 ext. 2114 to schedule an education.



The DeWitt-Piatt Bi-County Health Department collects dead birds for the surveillance of West Nile Virus. Depending on climate, the collection and testing period typically begins in May and ends in September. Crows, blue jays, and other "Perching Birds"(sparrows, finches, flycatchers, swallows, warblers and wrens) will be accepted and submitted for WNV testing provided they show no obvious signs of decay such as sunken eyes or insect infestation. Please call 217-935-3427 ext. 2114 if you notice a bird that fits this description.



For more information regarding West Nile Virus, please visit the Illinois Department of Public Health's website



Bed bugs are not considered a vector since they do not spread disease.  The DeWitt-Piatt Bi-County Health Department does not inspect for bed bugs and cannot recommend a treatment.  Please visit either the Illinois Department of Public Health's website or the EPA's website for more information.