State health officials are urging Indiana residents to take steps to protect themselves from mosquito bites amid an increase in West Nile virus activity in mosquitoes across the state. As of July 15, one human case of West Nile virus has been confirmed in Marion County, and mosquitoes in Marion, Hamilton, Jennings and Benton counties have tested positive for West Nile virus. The Indiana State Department of Health (ISDH) expects to continue to see increased West Nile activity throughout the state as the mosquito season progresses. State Health Officials Suggest researching and taking steps to avoid contact with mosquitoes. This includes using insect repellent, install or repair window and door screens, and getting rid of or avoiding objects and areas that can serve as mosquito breeding grounds.