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It All Starts With Surveillance

A good adult mosquito surveillance program is perhaps the cornerstone of mosquito management and control. Surveillance involves trapping and counting mosquitoes, identifying the species, and performing disease testing on the mosquitoes. Franklin County Public Health takes a proactive approach to mosquito management by performing weekly adult mosquito surveillance. We do this by setting approximately 50 mosquito traps in various locations throughout the county. The traps include gravid traps, which are used to collect mosquitoes that carry West Nile Virus (WNV), CDC light traps and BG sentinel traps are used to find other disease carrying mosquitoes; specifically those that carry La Crosse encephalitis and Chikungunya. These traps are set from mid-May through late September. The gravid traps remain in the same locations throughout the year but the CDC light traps and BG sentinel traps are moved throughout the season. The species of mosquitoes collected in the traps are counted and identified by our staff.

  Gravid Trap CDC Light Trap CDC Light Trap
  Gravid Trap CDC Light Trap BG Sentinel Trap

Mosquito Trap Data

2017 Arboviral Surveillance Results
2017 Mosquito Trap Numbers Report

Mosquito Trap Report Archive

2016 Arboviral Surveillance Results
2016 Mosquito Trap Numbers Report
2015 Arboviral Surveillance Results
2015 Mosquito Trap Numbers Report
2014 Arboviral Surveillance Results
2014 Mosquito Trap Numbers Report
2013 Arboviral Surveillance Results
2013 Mosquito Trap Numbers Report
2012 Arboviral Surveillance Results

2012 Mosquito Trap Numbers Report
2011 Mosquito Trap Numbers Report

West Nile Virus Testing

West Nile virus (WNV) testing is performed on all of the adult mosquitoes that are caught in FCPH gravid traps. These mosquitoes are divided into “pools” or groups of fifty (50) and are then tested for the presence of WNV. Many of the mosquito pools collected are tested at our facility by using RAMP (Rapid Analyte Measurement Platform). This enables us to have WNV test results within hours as opposed to days or weeks. During the peak of the WNV transmission cycle, this in-house testing is invaluable at providing us one of the tools that help us determine when it is appropriate to adulticide or spray an area to control adult mosquitoes. Unfortunately, we are unable to RAMP test all the mosquitoes we trap; however, the Ohio Department of Health tests all mosquitoes submitted by local health departments and confirms for WNV.

Learn more about the testing platforms and West Nile Virus positive pools.