A dead blue jay found in Portage County earlier this month has tested positive for the West Nile Virus. It is the first bird to test positive since testing started this year in early May. Portage County health officials say the positive test means residents need to be more vigilant in their protection against mosquito bites. That’s how the virus can be spread to humans. Limit your time outdoors at dawn and dusk, and use mosquito repellant, even applying it to your clothing, and make sure window and door screens are in good repair so mosquitos don’t get into your home. Eighty percent of people who get West Nile experience no symptoms, while those who do usually have flu-like symptoms. About 1 percent of those infected get seriously ill.