Mexican soldiers wear surgical face masks as they stand on an Army vehicle in Mexico City April 26, 2009.Mexico said a new flu virus has killed up to 149 people and it ordered all schools to close across the country on Monday as the disease spread in the United States, Canada and Europe, raising fears of a pandemic.
The flu virus spreads quickly between humans and although it has so far only killed people in Mexico, governments across the world took measures to try to reduce its impact.
The World Health Organization said its emergency committee could decide to raise its pandemic alert level, currently at 3 on a scale of 1 to 6, to phase 4 or 5. The move would show the WHO believes that large outbreaks are possible.(keep reading)
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