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Total number of West Nile virus neuroinvasive disease cases by state of residence, United States, 2009-2018

A total of 12,835 neuroinvasive cases were reported in the United States from 2009 to 2018. Cutpoints determined by Jenks Natural Breaks Classification method and then rounded for ease of display. (Source: McDonald E, Mathis S, Martin SW, Staples JE, Fischer M, Lindsey NP. Surveillance for West Nile Virus Disease - United States, 2009-2018. MMWR Surveill Summ 2021;70(1):1-15.)

Associated Disorders

  • Encephalitis
  • Meningitis
  • Meningoencephalitis
  • Poliomyelitis