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Swine flu: The new pandemic?
In several years, the avian flu outbreak that has mainly been claiming victims in Asia has reached phase 3, which is the earliest phase of the pandemic warning period. In a few weeks the swine flu outbreak that started in Mexico has gone to phase 5, the last of the pandemic warning period. Just how serious is this disease going to be? (If it is any consolation, it does not appear to have as high a mortality rate as avian flu - although no-one seems to know just what the mortality rate is.)
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