![]() However, most people are protected from getting West Nile virus disease again once they have had it. Some people who have weakened immune systems from certain conditions or medications might not have a strong immune response to the initial infection or their immunity may wane over time. ![]() Most people infected with West Nile virus are believed to have lifelong immunity from getting the disease again. Interactive maps and tables updated every Friday, during the transmission season. To learn more about treatment, visit our Healthcare Providers page. Weekly updates with the latest reports on West Nile virus cases in Europe. In severe cases, patients often need to be hospitalized to receive supportive treatment, such as intravenous fluids, pain medication, and nursing care.Rest, fluids, and over-the-counter pain medications may relieve some symptoms.No vaccine or specific medicines are available for West Nile virus infection.To learn more about testing, visit our Healthcare Providers page. Your healthcare provider can order tests to look for West Nile virus infection or other infections that can cause similar symptoms.Laboratory testing of blood or spinal fluid.History of possible exposure to mosquitoes that can carry West Nile virus.Healthcare providers diagnose West Nile virus infection based on:.If you think you or a family member might have West Nile virus disease, talk with your health care provider. About 1 out of 10 people who develop severe illness affecting the central nervous system die.Very few people (fewer than 1 per cent of people infected with the virus) will develop severe symptoms and health effects. Adults 50 years or older and those with underlying conditions or weaker immune systems, however, are at greater risk. Some effects to the central nervous system might be permanent. Anyone infected with West Nile virus can be at risk of developing more severe symptoms and health effects. Recovery from severe illness might take several weeks or months.People with certain medical conditions, such as cancer, diabetes, hypertension, kidney disease, and people who have received organ transplants, are also at greater risk. Severe illness can occur in people of any age however, people over 60 years of age are at greater risk for severe illness if they are infected (1 in 50 people).Symptoms of severe illness include high fever, headache, neck stiffness, stupor, disorientation, coma, tremors, convulsions, muscle weakness, vision loss, numbness and paralysis.Serious symptoms in a few people. About 1 in 150 people who are infected develop a severe illness affecting the central nervous system such as encephalitis (inflammation of the brain) or meningitis (inflammation of the membranes that surround the brain and spinal cord). Most people with febrile illness due to West Nile virus recover completely, but fatigue and weakness can last for weeks or months. About 1 in 5 people who are infected develop a fever with other symptoms such as headache, body aches, joint pains, vomiting, diarrhea, or rash. Most people (8 out of 10) infected with West Nile virus do not develop any symptoms.įebrile illness (fever) in some people. ![]()
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