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Alert Level Raised to 5

The World Health Organization uses a six-step system to inform the world of the seriousness of a threat. The phases:

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Diseases Travel Fast, but So Do Tools to Fight Them
Article | LONDON, April 28 -- Teenagers in New Zealand, honeymooners in Scotland, high-schoolers in New York and tourists in Israel all are sick from the same bug caught just days ago on trips to Mexico.

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