OKLAHOMA CITY -- State of Oklahoma Health Officials are warning residents about a possible resurgence of the West Nile Virus.
One man has contracted it in Pittsburgh County.
Mosquitoes in Tulsa have also tested high for the virus.
State Epidemiologist Dr. Kristy Bradley said there are a few reasons we may see more West Nile this year.
"The factors include rainfall, the immunity in the bird population because birds are the source, and the timing of the heat. These really hot temperatures really fuel the fire," she said.
West Nile is spread through the bite of the Culex mosquito which feeds on infected birds.
It spreads when the bugs bite humans and other animals.
Those 50 and over should be especially careful because they can be more at risk for severe West Nile.
Symptoms of the virus include sudden fever, headache, dizziness and muscle weakness.
Long-lasting complications can include paralysis and tremors.
Health officials recommend people make sure they get rid of any standing water around their homes and wear bug spray containing Deet.