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Press Releases

Sept. 11 Mosquito Spraying CANCELED

Released on Tuesday, September 10, 2019

The City of Fort Collins and Larimer County Department of Health and Environment have CANCELED the mosquito spraying scheduled for Wednesday, Sept. 11.

The latest trap data analyzed on Monday shows a considerable decline in the West Nile virus vector index, and therefore a decline in the public health risk.

The decision to cancel Wednesday’s spray operations follows the recommendation by the Larimer County Department of Health and Environment, in accordance with the City’s West Nile Virus Management Policy.

Spray operations on Sunday, Sept. 8 were significantly delayed and ultimately suspended due to inclement weather. Approximately one-third of the original spray zone was treated; a map of the areas that received treatment is available at