The World Health Organisation is considering an overhaul of its pandemic rating system amid criticism that it provoked alarm by rapidly escalating its warnings over swine flu.
Officials at the agency's headquarters in Geneva said they were discussing changes to the six-point scale to make clear in the future the gravity of the threat posed by a new virus.
The WHO has been accused of “crying wolf” over its decisions to raise its pandemic alert from level three to an unprecedented five. There are indications it may even go to six, the maximum level.
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