Factbox: The WHO’s pandemic alert phases
Tue, Aug 10 2010
(Reuters) – The World Health Organization will announce on Tuesday whether the H1N1 flu outbreak has been downgraded from a pandemic status.
The WHO uses a series of six phases of pandemic alert to inform the world about an outbreak and the need to launch progressively more intense preparations and measures.
The phases at the upper end of the scale mark the geographic spread of the circulating influenza, not its severity.
