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April 28, 2009
Health News - WHO Is Raising Pandemic Alert to Phase 4
Monday April 27, 2009
WHO Is Raising Pandemic Alert to Phase 4
Homeland Security Secretary Janet Napolitano says that the World Health Organization will raise its pandemic alert system to level 4 -- sustained human-to-human transmission -- in response to the swine flu outbreak in the U.S. and Mexico.
Developing story.
http://www.medpagetoday.com/InfectiousDisease/URItheFlu/tb/13923
Posted by Robert at April 28, 2009 08:35 AM