City notified of two more positive samples
The Tarrant County Public Health Department (TCPHD) has notified the city of Colleyville that two mosquito samples from two of its regular sample sites have tested positive for the West Nile Virus (WMV). One of the positive tests came from the same site where a mosquito in each of four previous samples tested positive. This is the first positive test at the other site. Both sites are in Little Bear Creek.
The city will continue escalating treatment at both sites with a granular larvacide to get greater coverage in the creek where affected mosquitoes are likely originating. In addition the city will institute localized, targeted fogging (spraying) in the affected creek areas. The city plans a measured response using all-terrain vehicles and backpacks in the creek and surrounding areas. No fogging will be conducted from trucks on city streets. Residents in proximity to these sample sites will be notified prior to the commencement of fogging.
City staff will continue mosquito surveillance daily at both sites and will continue to treat the area as necessary. In addition, the city is working with an entomologist from Tarrant County Public Health to determine any additional course of action that should be considered.