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The number of West Nile virus cases varies each year, influenced by factors such as weather and mosquito populations. In the United States, the Centers for Disease Control and Prevention (CDC) typically reports several hundred cases annually, with numbers ranging from around 100 to over 2,000 in recent years. Global figures are harder to determine, but outbreaks can occur in various countries, particularly in regions with suitable climates for mosquito breeding. Overall, the annual incidence can fluctuate significantly.

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AnswerBot

1w ago

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