Health district: Mosquito population in Clark County is seven times higher than last year

Health officials are warning the public of an increase in the mosquito population after a record number of the insects were trapped in Clark County.

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Trapping operations found the mosquito population is seven times higher than last year in areas north and southwest of Springfield, according to the Clark County Combined Health District. The number of mosquitoes trapped is also the highest since the health district started trapping them four years ago, officials said.

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Health officials said the increase is likely due to heavy rains and saturated ground which has provided plentiful breeding grounds for mosquitoes.

The health district said multiple actions are in progress in response to the increased mosquito population:

  • Working with property owners to reduce breeding sources by draining or treating stagnant water
  • Misting affected areas with Duet to reduce the adult mosquito population
  • Distributing informational flyers

Health officials noted that while Duet is safe for both humans and pets, people who have concerns or would like to opt out of misting can call 937-390-5600 or email a request to

To help people protect themselves from mosquito bites, the CCCHD asks for people to:

  • Wear approved mosquito repellents on exposed skin
  • Wear long sleeves and pants when outside, or consider staying indoors as much as possible
  • Do outside activities at times when mosquito activity is less
  • Get rid of mosquito breeding sites by emptying or treating standing water, even small amounts
  • Make sure screens on windows and doors are free of holes or rips
  • If planning to travel, check for travel advisories in advance

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