Blood donations that test positive for West Nile virus are discarded and not used for transfusions.
Even rarer, about 1 in 150 people who are infected with West Nile virus can develop a serious illness - such as inflammation of the spinal cord or brain - the CDC said.
Mosquitoes are largely to blame for spreading West Nile virus. People who have had WNV before are considered immune.
The department recommends knowing the risk and taking action to prevent mosquito bites to protect yourself against West Nile Virus. City crews also monitor the mosquito population on a weekly basis through the use of mosquito traps to evaluate the effectiveness of larval control, provide early warnings for when adult populations are rising and also test for West Nile Virus. He said the last time Guilford had a reported case of the disease in a human was back in 2000.
Apply insect repellents that contain the active ingredient DEET, or other EPA-approved products to exposed skin or clothing, and always following the manufacturer's directions for use.
Eliminate stagnant water in birdbaths, ponds, flowerpots, wading pools, old tires and any other receptacles in which mosquitoes might breed.
Make sure you have good screens on your windows and doors to keep mosquitoes out. Fill tree holes with sand and seal with mortar and remove tree stumps that may hold water. Donations that test positively for West Nile are discarded. Symptoms of WNV disease include fever, headache, weakness, muscle pain, arthritis-like pain, gastrointestinal symptoms, and rash typically developing two to 14 days after a bite from an infected mosquito.
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