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Science 29 May 2009:
Vol. 324. no. 5931, p. 1127
DOI: 10.1126/science.324_1127
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News of the Week

Swine Flu Outbreak:

New Details on Virus's Promiscuous Past

Jon Cohen

An international team of scientists working at breakneck speed has provided the most detailed description yet of the origins of the novel H1N1 swine flu virus now causing a global outbreak. The study, published online by Science on 22 May, has good news about the prospects for making a vaccine against the virus. It also raises the intriguing possibility that a species other than pigs might have harbored a precursor to the virus.

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Science. ISSN 0036-8075 (print), 1095-9203 (online)