First human case of West Nile virus reported in Carson City-Douglas area

(Photo credit: CDC)

Carson City Health and Human Services and Douglas County Mosquito Abatement are reporting the first human case of West Nile virus in the Carson City-Douglas area for 2017.

The individual had the more serious form of the illness, which can impact the brain and surrounding tissues.

This coincides with the report of one positive mosquito collection in Carson City. The human case is not related to this collection.

Officials tested wetlands, ditches and other small bodies of water during the first week of August and of the samples collected, the virus is present in one of the test sites.

CCHHS staff plan to treat the areas to keep the virus from spreading. Mosquito surveillance and abatement activities have already been conducted a number of times throughout the summer in Carson City and Douglas County and are ongoing in those areas.

The most effective way to avoid the virus is to prevent mosquito bites. CCHHS and DCMA advise Nevadans and visitors to take the following precautions to prevent West Nile virus throughout the summer months:

  • Use insect repellents when you go outdoors
  • When weather permits, wear long sleeves, long pants, and long socks when you're outdoors
  • Take extra care during peak mosquito biting hours

For information about West Nile virus and other mosqutio-borne illnesses, visit

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