West Nile Virus

What you need to know
If you’ve spent any amount of time outside, enjoying the beautiful spring weather, you know two things are certain: the temperature is rising, and so is the mosquito population.
Nothing can ruin an otherwise enjoyable outdoor activity faster than relentless, pesky mosquitoes. But did you know that when a mosquito bites, it can leave behind more than just an irritating, itchy red bump?
Mosquitoes are known carriers of West Nile Virus, a disease which is contracted while feeding on infected birds, and then passed on to humans.
According to Dr. Robert Graham, Medical Director for the Mid-Michigan District Health Department (MMDHD), West Nile virus is a very serious disease that should not be taken lightly. While most people bitten by a WNV infected mosquito show no symptoms of illness, about one in five will experience mild illness with fever, headache, body aches, nausea, vomiting, swollen lymph glands, or a skin rash on the chest, stomach and back.
Mild cases do improve without medical treatment, but about one in 150 infected people will become severely ill with encephalitis or meningitis. Symptoms of encephalitis (inflammation of the brain) and meningitis (inflammation of the spinal cord and brain linings) include high fever, headache, stiff neck, disorientation, coma, tremors, muscle weakness, convulsions, vision loss, numbness, and paralysis.
Last year, Michigan reported 202 cases of WNV and seventeen deaths. And while there have been no human cases in our area so far this year, a turkey in Gratiot County did test positive for the disease, so it is definitely best to err on the side of caution.
At this time, there is no specific treatment for WNV infection, which means that it’s important to take precautions to avoid getting infected. Precautions include:
· Maintaining window and door screens to help keep mosquitoes out of buildings.
· Emptying water from mosquito breeding sites such as buckets, unused kiddie pools, old tires, etc.
· Avoiding the outdoors at dusk and dawn when mosquitoes are most active.
· Wearing light colored, long-sleeved shirts and long pants when outdoors, especially at dusk and dawn.
· Applying insect repellent to exposed skin or clothing, following manufacturer’s directions.
For more information on WNV and surveillance activity updates, visit www.michigan.gov/westnilevirus.