A 45-year-old Etobicoke woman has been diagnosed with West Nile virus, the first human case for the Toronto area this year.

To avoid mosquito bites, which can cause West Nile infection:

Consider using federally registered personal insect repellents, such as those containing DEET. Be sure to follow the directions for their use, especially for children. When possible, wear long–sleeved clothes and long pants. Consider staying indoors at dawn, dusk and in the early evening, which are peak mosquito biting times. Limit the number of places available for mosquitoes to lay eggs by eliminating standing water sources from around your home. Sources: Health Canada and U.S. Centers for Disease Control

The woman was in hospital for two weeks and is recovering at home.

So far this year, 26 mosquito pools and eight birds have tested positive for the virus in Toronto.

"We know West Nile virus is circulating throughout the city and it's important to take precautions," associate medical officer of health Dr. Michael Finkelstein said Friday. "Human cases of the illness are usually contracted at this time of year."

The overall risk of becoming infected with West Nile virus is low, according to health officials. They said most people who do contract the virus will not experience symptoms.

For those who do, symptoms include fever, headaches and fatigue.

In about one per cent of cases, the West Nile virus can cause a more serious illness called West Nile neurological syndrome, which can have serious complications, including weakness, paralysis, coma or death.