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Public Health

WHO: H1N1 spread has reached pandemic level

Although the H1N1 virus has not proven as deadly as the annual bouts of seasonal flu, the World Health Organization (WHO) raised the pandemic threat level today from 5 to 6, the highest designation, signaling that there has been substantial "community transmission" on multiple continents. 

At least 28,774 cases of the virus have been reported in 74 countries, and 144 people have died, the WHO reports on its Web site...

June 11, 2009 — Katherine Harmon
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