WHO working on formulas to model swine flu spread

(AP) -- The World Health Organization said Wednesday it is working to mathematically model the spread of swine flu in an attempt to better understand how the outbreak developed from a handful of cases to a global epidemic in less than two months.

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<p><a href="http://www.physorg.com/news165686771.html">WHO working on formulas to model swine flu spread</a></p> <p>(AP) -- The World Health Organization said Wednesday it is working to mathematically model the spread of swine flu in an attempt to better understand how the outbreak developed from a handful of cases to a global epidemic in less than two months.</p>