A statement from the Shelby County Health Department on Thursday says the virus has been detected in mosquitoes throughout the county and officials are advising residents to take extra precautions.
"Mosquitoes are weak flyers and won't travel far from where they are born - if there are mosquitoes in your backyard or neighborhood, they are likely laying eggs there as well", said Matt Helwig, a biolgist with the DEP mosquito program.
Health officials say infected mosquitoes can transmit the virus to people and other animals. The increase, officials said, is widespread across the county and has happened earlier this summer, compared with previous years.
It's the first human case of the virus in Colorado for the 2018 mosquito season. There were no reported cases of West Nile in the county past year.
Overall, 39 cases of West Nile have been reported in humans as of July 24.
China says fully prepared for United States threats on escalating trade war
The review of the higher tariff is a request from President Donald Trump, who wants China to change its trade practices. China is experiencing a weakening economy, hurting its ability to withstand US trade pressure.
The positive test in Oakville came from mosquitoes trapped this week.
Symptoms of West Nile virus include fever, headache, body aches, a skin rash and swollen lymph glands. WNV infections are generally mild but can, in more serious cases, cause encephalitis, meningitis, loss of vision, paralysis, coma, tremors, convulsions and death.
Those who are 60 years of age or older are at the greatest risk along with those who have medical conditions like cancer, diabetes, hypertension, kidney disease, and or who have received organ transplants.
To reduce the number of mosquitoes in your yard, be sure to remove any standing water from items such as pots, hot tubs, pools, buckets or wheelbarrows.