This year, nine Oklahomans — who range in age from at least 10 years old to older than 80 — have developed neuroinvasive disease because of West Nile virus. Symptoms include headache, high fever, neck stiffness, disorientation, coma, tremors, seizures or paralysis, according to the CDC.
There is no cure or vaccine for West Nile virus. If a person is admitted to the hospital, a doctor generally can only treat their symptoms.
Public health officials have urged residents to take precautions against mosquitoes, emptying standing water around their homes and using mosquito repellent while outdoors.