Public Health Update – West Nile Virus


21 December, 2012

The Southern Nevada Health District is reporting an additional human case of West Nile in a 51-year-old woman with the less serious form of the illness. She was not hospitalized. In addition, West Nile positive mosquito pools were identified in the 89121 and 89124 zip codes. Cooler temperatures and shorter daylight hours are expected to diminish mosquito breeding and risk for infection, however, the health district continues to remind Southern Nevadans they can take precautions against West Nile virus.

Among the seven previously reported human cases in Southern Nevada this year, three patients had a less serious form of the illness, and five were hospitalized. One patient has died. The death was the fourth West Nile-related death in Clark County since 2003.

This summer, the health district’s vector control program identified West Nile-positive mosquito pools in the 89011, 89107, 89141, 89145 zip codes and the 89029 zip code in Laughlin. The Nevada Department of Agriculture reported that an unvaccinated horse in the 89130 zip code contracted West Nile disease. There is currently no vaccine for people. The link to the Department of Agriculture is:

With the identification of positive mosquito pools in Clark County it is likely that West Nile virus infected mosquitoes are present throughout the valley and precautions against the disease are recommended for all residents and visitors.

West Nile virus can be prevented by using insect repellents and eliminating sources of standing water which support mosquito breeding. For information about prevention tips, visit the health district’s West Nile virus pages on its website:

Updated information about the Southern Nevada Health District can be found on Facebook, on YouTube or Twitter The health district is now available in Spanish on Twitter Don’t have a Twitter account? Follow the health district on your phone by texting “follow SNHDinfo” to 40404.

Visit the Media Contacts webpage for media related inquiries.


Access information about the Southern Nevada Health District on its website: Follow the Health District on Facebook:, YouTube:, Twitter:, and Instagram: The Health District is available in Spanish on Twitter:  Additional information and data can be accessed through the Healthy Southern Nevada website: