The Windsor-Essex County Health Unit says a resident has tested positive for the West Nile Virus, the first of the year.
Although it is the first lab-confirmed case, health officials acknowledge that there could be others in the community since most people with the virus never develop symptoms.
About 25% of victims develop West Nile fever, while less than 1% suffer severe neuroinvasive disease or encephalitis.
The health unit says the positive human case is a good opportunity to remind residents to take precautions against infection.
They recommend getting rid of any standing water on your property, using insect repellent containing DEET, wearing light-coloured, long-sleeved shirts, pants and a hat outside and limit your time outside during dusk and dawn when mosquitos are active.
So far this year, six mosquito pools in Windsor-Essex have tested positive for the West Nile Virus.