alexa West Nile virus Infection | Mexico| PDF | PPT| Case Reports | Symptoms | Treatment

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West Nile Virus Infection

  • West Nile virus Infection

    Pathophysiology: West Nile virus (WNV) is a neurotropic flavivirus that has emerged globally as a significant cause of viral encephalitis. Infection of humans is associated with a febrile illness that can progress to a lethal encephalitis with symptoms including cognitive dysfunction and flaccid paralysis. Seroprevalence studies suggest that while the majority of WNV infections are asymptomatic, approximately 20 to 30% of infected individuals develop flu-like clinical manifestations characterized as WNV fever.

  • West Nile virus Infection

    Disease statistics: The epidemiology of WNV-associated disease in Mexico is puzzling. According to the Centers for Disease Control and Prevention, 2,470 human cases of WNV infection were confirmed during 2004 in the United States, with >80% of these from areas of California and Arizona bordering the northern Mexico states of Baja California and Sonora where many of our viral isolations were made. In contrast, only 7 human cases of WNV have been confirmed in Mexico.

  • West Nile virus Infection

    Treatment; The diagnosis of West Nile virus infection is confirmed with a blood or cerebrospinal fluid test. There is no specific treatment for West Nile virus infection. Intensive supportive therapy is directed toward the complications of brain infections. Anti-inflammatory medications, intravenous fluids, and intensive medical monitoring may be required in severe cases.

  • West Nile virus Infection

    Research: This research was supported by contract N01-AI25489 from the National Institutes of Health and by the California Mosquito Research Program. E.D. was supported by the T01/CCT622892 CDC Fellowship Training Grant in Vector-Borne Infectious Diseases. C.T.D. was supported by NIH T32 training grant AI 7256 in Emerging and Tropical Infectious Diseases.

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