Well, it's happened. A pandemic is looming though it comes not from bird flu in Asia, as we thought it might, but swine flu in Mexico (see page 6). It may yet fizzle out - viruses like this have done before - but no researcher we have spoken to is hopeful.rnSo what now? Things look bad, but rather than panicking we should use the best science we have to assess the situation. And then we should scream and scream again at the people in charge - caution-merchants and commercial interests for the most part - until someone does something.
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