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First Human Case of West Nile Discovered in DuPage

Fri August 26, 2016

DUPAGE COUNTY-The DuPage County Health Department announced on Friday the first reported human case of West Nile virus (WNV) in DuPage County in 2016. The case is a female Darien resident in her 80s.

The Health Department reminds residents that they should continue to protect themselves against mosquito bites to prevent contracting WNV.

Residents should check the Personal Protection Index (PPI) widget on the Health Department's website at to get the most up-to-date information on WNV activity. Last week, the Health Department increased the Personal Protection Index (PPI) level for West Nile Virus to 2.  

WNV is transmitted to people by infected mosquitoes.  The best way to prevent WNV is to avoid mosquito bites.  The DuPage County Health Department advises residents to adhere to the 4 Ds of Defense against mosquitos:

• Defend yourself by using insect repellent when you go outdoors.
• During the hours from dusk to dawn avoid being outside when the mosquitoes that transmit WNV are most active.
· If outdoors, wear long sleeves and pants from dusk to dawn.

• Drain standing water from items outside your home such as flowerpots, buckets and kiddie pools.

Approximately one in five people who are infected with WNV will develop symptoms such as fever, headache, body aches, joint pains, vomiting, diarrhea, or rash.  Less than 1 percent will develop a serious neurologic illness such as encephalitis or meningitis (inflammation of the brain or surrounding tissues). 

WNV activity generally decreases in the fall when cooler temperatures arrive and especially after the first frost of the season. 

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