GENEVA (AP) – The World Health Organization has raised its
pandemic alert for swine flu to the second highest level, meaning
that it believes a global outbreak of the disease is imminent.
WHO says the phase 5 alert means there is sustained human to
human spread in at least two countries. It also signals that
efforts to produce a vaccine will be ramped up.

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WHO has confirmed human cases of swine flu in Mexico, the United
States, Canada, Britain, Israel, New Zealand and Spain. Mexico and
the U.S. have reported deaths.
WHO Director-General Margaret Chan made the decision Wednesday
to raise the alert level from phase 4 – signifying transmission in
only one country – after reviewing the latest scientific evidence
on the outbreak.