A dead crow found in Sarnia's north end late this month has tested positive for the West Nile virus.
Lambton Public Health Supervisor Erin Courtney says test results received Tuesday confirmed the bird was infected.
It's the first positive finding in Sarnia-Lambton this year.
No human cases of West Nile virus have been reported.
Residents are urged to take precautions to prevent exposure to mosquitoes by eliminating breeding sites and standing water and wearing insect repellent containing Deet.
West Nile virus is spread to humans through the bite of an infected mosquito. However, the majority of people infected with the virus do not get sick.
Those that do, usually experience mild flu-like symptoms like fever, headache, skin rash or muscle aches.
Less than 1% of people infected with the virus get seriously ill.
In an effort to track the West Nile Virus, residents are asked to report sightings of all dead birds by calling 519-383-3824, toll-free at 1-800-667-1839 or online at www.lambtonhealth.on.ca