West Nile Virus and Other Nationally Notifiable Arboviral Diseases --- United States, 2017

In 2017, 48 states and the District of Columbia reported 2,291 cases of infection from viruses carried by mosquitoes and ticks, with West Nile virus most frequently reported.In 2017, Eastern equine encephalitis virus transmission via organ transplantation was reported for the first time. More cases of Jamestown Canyon and Powassan virus neuroinvasive disease were reported in 2017 than in any previous year.

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