A local health department has confirmed two cases of Lacrosse encephalitis.
The patients are two adults from Polk County.
Public Health Supervisor Bonnie Leonard hasn't released the identities, ages, or the gender of either patient.
She also won't say which communities they're from. Both cases were confirmed in July in separate areas of the county.
Leonard says one of the patients will make a full recovery, the other; she hasn't gotten a hold of.
Lacrosse encephalitis is a mosquito-borne disease.
Leonard says it can't be transmitted from person-to-person.
To protect yourself from the disease, health workers suggest using mosquito repellent and wearing long sleeves.
You should also avoid having containers in your yard that hold water.