Department: Health & Environment
Release Date: Jun 29, 2017
The Larimer County Department of Health and Environment reports that mosquitoes infected with West Nile virus were trapped in Berthoud last week, making this the first positive sample reported in Larimer County and Colorado in 2017. The presence of infected mosquitoes will likely increase in Larimer County in the coming weeks, as the hot weather speeds up both mosquito and virus reproduction. West Nile virus is most frequently transmitted locally in July and August.
West Nile disease is a viral infection which is spread to people by bites from infected Culex mosquitoes. Symptoms can range from none at all to severe illness. About 75% of people who are infected are asymptomatic; about 25% will develop West Nile fever. Less than 1% develop the more severe neuroinvasive form, which can lead to hospitalization, critical illness, chronic disability, or even death.
Larimer County Department of Health and Environment works with cities, Vector Disease Control International (previously Colorado Mosquito Control, Inc.), and Colorado State University to monitor and assess the risk to Larimer County residents. The Health Department also works with homeowner’s associations to provide advice on eliminating sources of mosquito breeding and other methods of mosquito control.
West Nile Virus can be prevented. In addition to community efforts, such as larviciding, reducing water where mosquitoes can breed, and spraying for adult mosquitoes, individuals can remember to use the 4 D’s to help prevent West Nile virus disease:
For more tips on what you can do to prevent West Nile virus, visit Larimer.org/westnile