(August 7, 2003) - (Little Rock-AP) -- Jefferson County is the location of the first human case of West Nile virus in Arkansas this year. State Health Department officials would NOT release details about the patient. There were 43 human cases in Arkansas last year, including five that ended in death. Health Department officials say less than one percent of people bitten by an infected mosquito develop severe illness. West Nile produces mild symptoms, if any, in most people. The symptoms include fever, muscle and joint aches and listlessness. The virus can NOT be passed from human to human. The department advises people to make sure their doors and windows are well sealed, stay indoors between dusk and dawn, when mosquitoes are more active, and wear protective clothing and mosquitor repellent when outdoors.