“The recent rains are leaving many pools of water behind, not only
in sewer systems under streets and drainage ditches along roads, but
in our own backyards,” said Acting IDPH Director Dr. Ngozi Ezike.
“As we start to see higher temperatures, we will start to see more
West Nile virus activity. While we see West Nile virus in Illinois
every year, it is important not to become complacent. It’s easy to
take precautions to protect yourself by wearing insect repellent and
getting rid of standing water around your home.”
Monitoring for West Nile virus in Illinois includes laboratory tests
for mosquito batches, dead crows, blue jays, robins and other
perching birds, as well as testing sick horses and humans with West
Nile virus-like symptoms. People who see a sick or dying crow, blue
jay, robin or other perching bird should contact their local health
department, which will determine if the bird will be picked up for
testing.
West Nile virus is transmitted through the bite of a Culex pipiens
mosquito, commonly called a house mosquito, that has picked up the
virus by feeding on an infected bird. Common symptoms include fever,
nausea, headache and muscle aches. Symptoms may last from a few days
to a few weeks. However, four out of five people infected with West
Nile virus will not show any symptoms. In rare cases, severe illness
including meningitis, encephalitis, or even death, can occur. People
older than 60 and individuals with weakened immune systems are at
higher risk for severe illness from West Nile virus.
The first mosquitoes to test positive for West Nile virus in 2018
were collected on May 25, 2018 in Cook County. Last year, 74
counties in Illinois reported a West Nile virus positive mosquito
batch, bird and/or human case. IDPH reported 176 human cases
(although human cases are underreported), including 17 deaths.
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Precautions to Fight the Bite include practicing the three “R’s” – reduce,
repel, and report.
REDUCE - make sure doors and windows have tight-fitting screens. Repair
or replace screens that have tears or other openings. Try to keep doors and
windows shut.
Eliminate, or refresh each week, all sources of standing water where mosquitoes
can breed, including water in bird baths, ponds, flowerpots, wading pools, old
tires, and any other containers.
REPEL - when outdoors, wear shoes and socks, long pants and a
light-colored, long-sleeved shirt, and apply insect repellent that contains DEET,
picaridin, oil of lemon eucalyptus, or IR 3535 according to label instructions.
Consult a physician before using repellents on infants.
REPORT – report locations where you see water sitting stagnant for more
than a week such as roadside ditches, flooded yards, and similar locations that
may produce mosquitoes. The local health department or city government may be
able to add larvicide to the water, which will kill any mosquito eggs.
Additional information about West Nile virus can be found on the IDPH website.
[Illinois Department of Public
Health]
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