Surveillance testing has indicated West Nile Virus (WNV) is widespread in the area, according to a press release from the .
The Health Department reports 89 mosquito pools have tested positive for WNV so far this season, compared to only one positive test during the same period last year. The first positive test was reported on May 18 this year, compared to July 15 last year.
According to an interactive map of mosquito testing in the area, mosquitoes last tested positive for WNV in Wheaton on July 25 and July 27.
The virus is transmitted to people by infected mosquitoes. In the United States, most people are infected between June and September, and the number of these infections usually peaks in mid-August. Seasonal outbreaks often occur in local areas that can vary from year to year. Many factors impact when and where outbreaks occur, such as weather, numbers of mosquitoes that spread the virus, and human behavior.
The best way to prevent West Nile virus disease is to avoid mosquito bites:
- Use insect repellents when you go outdoors.
- Wear long sleeves and pants during dawn and dusk.
- Install or repair screens on windows and doors. Use air conditioning, if you have it.
- Empty standing water from items outside your home such as flowerpots, buckets and kiddie pools.
Approximately one in five people who are infected with West Nile virus will develop symptoms such as fever, headache, body aches, joint pains, vomiting, diarrhea, or rash. Less than one percent will develop a serious neurologic illness such as encephalitis or meningitis (inflammation of the brain or surrounding tissues).
People over age 50 and those with certain medical conditions, such as cancer, diabetes, hypertension, kidney disease, and organ transplants, are at greater risk for serious illness.
There are no medications to treat, or vaccines to prevent, West Nile virus infection. People with milder illnesses typically recover on their own, although symptoms may last for several weeks. In more severe cases, patients often need to be hospitalized to receive supportive treatment, such as intravenous fluids, pain medication, and nursing care. Anyone who has symptoms that cause concern should contact a health care provider.
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Information courtesy of a press release from the DuPage County Health Department.