The Kansas Department of Health and Environment (KDHE) is reporting two cases of neuroinvasive West Nile virus (WNV) disease in individuals who reside in Johnson County. Four regions of the state remain under a high-risk warning for WNV, including north central, south central, northwest, and southwest Kansas. Northeast and southeast regions are at moderate risk for WNV infections. WNV can be spread to people through mosquito bites, but it is not spread from person to person. About one in five people who are infected develop a fever and other symptoms. Roughly one out of 150 infected people develop the more severe version of the disease, neuroinvasive disease, which includes swelling of the brain or brain tissue and, in some cases, death. There are no vaccines or medications to treat WNV. People who have had WNV before are considered immune. Please encourage your patients, especially the vulnerable populations to take steps to prevent infection because of the possible complications. KDHE recommends assessing your risk of WNV and taking action to prevent mosquito bites and protect yourself against WNV. Visit the KDHE WNV website weekly to learn about the current WNV risk level. Read entire news release.