We are seeing our first signs of West Nile virus in the state. Health officials have confirmed mosquitoes in Marshall County and Pike County have tested positive for the virus. At this time, there are no reported human cases of West Nile. It is spread to humans by the bite of infected mosquitoes. Officials say this is the time of year when the virus poses its greatest risk. You are urged to avoid being outside during prime biting times and wear long-sleeve shirts and pants outdoors, you should always use repellent containing DEET. You can also limit risk by preventing breeding by discarding anything that holds water and keeping grass trimmed.