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Science 21 October 2005:
Vol. 310. no. 5747, p. 401
DOI: 10.1126/science.310.5747.401m
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This Week in Science

Influenza virus can cross species barriers at any time in any place, and birds or swine are not the only sources of influenza virus for human beings. Crawford et al. (p. 482, published online 29 September; see the 30 September news story by Enserink) report a rare event, the transfer of an entire influenza virus, H3N8, between unrelated mammalian species (horse to dog) and its sustained transmission. The virus is phylogenetically related to an equine influenza that circulated in the 1990s. A serological and postmortem survey across the United States of recent outbreaks of respiratory disease and death among greyhounds from racing tracks revealed enzootic influenza virus was the cause. This virus is now spreading into the pet dog population.




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