A dead crow recently collected in Portage County has tested positive for the West Nile viras. The county’s division of public health says it’s the first bird that tested positive for West Nile in the county since surveillance for the mosquito-transmitted virus began in May. Health officer Gary Garske says residents need to be vigilant in their personal protective measures to prevent mosquito bites, such as limiting time outdoors at dawn and dusk, applying insect repellant to clothing as well as exposed skin, getting rid of standing water, and trimming tall grass around your home. West Nile virus can be spread to humans through the bite of an infected mosquito. 80 percent of people who are infected do not get sick. Older adults and those with compromised immune systems are at greater risk of developing symptoms, which can include fever, headache, rash, and fatigue.