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First West Nile Case Reported

Charleston County woman first in the state to contract virus this summer.

A Charleston County woman is the first in the state to contract West Nile Virus this summer, according to the S.C. Department of Health and Environmental Control.

“This woman was identified as positive for the virus after donating blood,” said Linda Bell, M.D., interim state epidemiologist. “All donated blood is routinely screened for West Nile to ensure the safety of our blood supply. Fortunately, she is recovering from her illness.”

West Nile is a disease of birds transmitted to humans and animals through the bite of an infected mosquito, Bell said. Mosquitoes become infected after feeding on infected birds.

People bitten by an infected mosquito may become ill within two to 14 days with flu-like symptoms, including fever, headache, joint pain, muscle pain, and occasionally nausea and vomiting, the state advises. Often they experience sensitivity to light and inflammation of the eyelids. Some may have a rash.

“The most important step anyone can take to prevent West Nile virus infection is to protect against being bitten by a mosquito,” Bell said. “The risk of serious illness is low. Less than 1 percent of people infected develop a potentially fatal swelling of the brain, known as encephalitis.”

So far this year in South Carolina, in addition to the person from Charleston County, West Nile has been detected in one dead crow, one horse, and one mosquito pool.

Avoiding West Nile:

  • DEET – Apply insect repellent containing DEET, picaridin, oil of lemon, eucalyptus, or IR 3535 according to label instructions. Repellents help keep mosquitoes from biting. DEET can be used safely on infants and children 2 months of age and older.
  • DRESS – Wear clothing that reduces the risk of skin exposure.
  • DAWN AND DUSK – Exposure to mosquitoes is most common during the early morning and evening so it is important to wear repellent at that time. Make sure that your doors and windows have tight-fitting screens to keep out mosquitoes.
  • DRAIN – Mosquitoes lay their eggs on standing water. Eliminate all sources of standing water on your property, including flowerpots, old car tires, rain gutters and pet bowls. If you have a pond, use mosquito fish (available from your local mosquito and vector control agency) or commercially available products to eliminate mosquito larvae.

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