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pkg west nile virus outbreak_00001126
pkg west nile virus outbreak_00001126

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    US experiences West Nile virus outbreak

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US experiences West Nile virus outbreak

The United States is experiencing its biggest spike in West Nile virus cases since 2004.

US experiences West Nile virus outbreak

The United States is experiencing its biggest spike in West Nile virus cases since 2004. CNN's Andrew Spencer reports.