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Nature. 2009 Jun 18;459(7249):931-9. doi: 10.1038/nature08157.

Emergence and pandemic potential of swine-origin H1N1 influenza virus.

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  • 1Department of Pathobiological Sciences, University of Wisconsin-Madison, Madison, Wisconsin 53711, USA.


Influenza viruses cause annual epidemics and occasional pandemics that have claimed the lives of millions. The emergence of new strains will continue to pose challenges to public health and the scientific communities. A prime example is the recent emergence of swine-origin H1N1 viruses that have transmitted to and spread among humans, resulting in outbreaks internationally. Efforts to control these outbreaks and real-time monitoring of the evolution of this virus should provide us with invaluable information to direct infectious disease control programmes and to improve understanding of the factors that determine viral pathogenicity and/or transmissibility.

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