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News From the Centers for Disease Control and Prevention
August 20, 2014

West Nile Virus Leading Cause of Neuroinvasive Arboviral Disease

JAMA. 2014;312(7):689. doi:10.1001/jama.2014.9631

The vast majority of neuroinvasive arboviral disease reported last year in the United States resulted from West Nile virus infection, according to a recent analysis.

In 2013, 2605 cases of arboviral disease were reported. West Nile virus was responsible for 2469 cases, of which 51% were neuroinvasive disease. La Cross virus caused 85 cases, Jamestown Canyon virus infections resulted in 22, Powassan virus caused 15, and eastern equine encephalitis virus caused 8 cases. St Louis encephalitis virus caused 1 case and an unspecified California serogroup virus resulted in 5 cases (Lindsey NP et al. MMWR Morb Mortal Wkly Rep. 2014;63[24]:521-526).

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