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West Nile Virus detected in Shelby County

An Aedes canadensis mosquito isolated on white background.  Aedes canadensis are a common pest mosquito and may be possible West Nile Vectors.

The Shelby County Health Department has received confirmation of mosquitoes infected with West Nile virus within ZIP code 38116. This is the first positive mosquito pool found within Shelby County in 2016.

Since March, the Shelby County Health Department’s Vector Control Program has treated areas by applying larvicides to standing bodies of water. These actions are consistent with the Health Department’s efforts to be proactive in decreasing the adult mosquito population. Larviciding is the practice of applying an Environmental Protection Agency (EPA) registered insecticide to areas where mosquito breeding has been confirmed and is the most effective way of eliminating mosquito populations.

As an additional precaution, the Health Department will conduct mosquito control activities, including truck-mounted spraying (adulticiding) of EPA-approved insecticides, weather permitting*, in portions of specific ZIP codes according to the following schedule:

Monday, June 6
8:30 p.m. – 11:30 p.m.
ZIP Codes: 38116, 38118, 38130, 38131, 38132

Tuesday, June 7
8:30 p.m. – 11:30 p.m.
ZIP Codes: 38127, 38053

Wednesday, June 8
8:30 p.m. – 11:30 p.m.
ZIP Codes: 38116, 38109

Thursday, June 9
8:30 p.m. – 11:30 p.m.
ZIP Codes: 38116, 38118

New feature: Citizens can now view the exact boundaries of each scheduled spray. Please visit New maps will be added weekly to reflect updated schedules.

Truck mounted spraying only effectively kills adult mosquitoes that are currently flying at the time the insecticide is released. Because of this, residents are highly encouraged to be vigilant as it relates to controlling mosquito populations around their homes and businesses. Citizens are encouraged to practice the 4 D’s:
• DEFEND yourself by using insect repellent. Follow label instructions.
• DRESS in long sleeves and pants, loose and light colored clothing when outdoors.
• DUSK/DAWN stay indoors during this time to avoid mosquitoes when they are most active
• DRAIN standing water and install or repair window screens