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Published online 2 April 2003 | Nature | doi:10.1038/news030331-4
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Deadly virus effortlessly hops species
Genetic engineering helps reveal origin of deadly 'flu
A single genetic change could have created the deadly virus that has killed over 50 people and infected more than 1,600, a new study suggests.
A new type of coronavirus is thought to be behind the pneumonia-like disease dubbed severe acute respiratory syndrome (SARS).
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