Two more cases of West Nile virus have been confirmed in Kane County, bringing this year's total to five, health officials said Wednesday.
The most recent cases involve a 63-year-old North Aurora man and a 31-year-old Aurora man, according to the Kane County Health Department. They join three other men between the ages of 46 and 78 from Aurora, Big Rock and Burlington who were previously diagnosed.
Only about two of every 10 people bitten by a mosquito carrying West Nile will experience illness, officials said. Symptoms including fever, headache and body ache typically set in three to 15 days after a bite.
Officials said those 50 or older face the highest risk of developing more serious illness, such as meningitis or encephalitis.
So far this year, at least 29 counties across Illinois have confirmed West Nile in people or animals.
For information on prevention, call Illinois' West Nile virus Hotline at (866) 369-9710 between 8 a.m. and 5 p.m. on weekdays or visit kanehealth.com.