Swine flu prompts World Health Organization to raise alert level

The level hits phase 5, a situation in which the likelihood of a pandemic 'is very high or inevitable,' an official says. A toddler is the first confirmed death in the U.S. As the swine flu outbreak continued to spread to countries around the world, the World Health Organization on Wednesday took the unprecedented step of raising the infectious disease alert level to phase 5, setting the stage for increased efforts to combat the infection.

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