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Roche drug gets WHO backing
The World Health Organisation (WHO) is to start distributing a further batch of 5.65m courses of the antiviral drug Tamiflu from Swiss drug maker Roche Holding. Earlier WHO director general Dr Margaret Chan said it was raising its pandemic alert to phase 6, the top of its six-point scale, because of the outbreak of swine flu (H1N1) , which can be treated by Tamiflu.