What is the global prevalence of West Nile virus infection?

Updated: Apr 23, 2020
  • Author: Jess D Salinas, Jr, MD; Chief Editor: Elizabeth A Moberg-Wolff, MD  more...
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Answer

The West Nile virus is most commonly identified in Asia, Africa, and the Middle East and is endemic in those parts of the world. In the 1990s, outbreaks of West Nile virus encephalitis were reported in Algeria, the Czech Republic, France, Romania, Russia, and Israel. [2] In the Americas, since its introduction into the United States, in 1999, the West Nile virus has spread to Canada and into South America. [23]


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