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1957 1968 how can radically new viral genotypes

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Unformatted text preview: n radically new viral genotypes evolve so fast? (or some other farm animal) Bird Virus Human Virus Hybridization Hybrid Farm Virus Animal both viruses in same cells Coinfection of a farm animal with both the human and animal virus Hybrid virus carries new virulence genes to which the human population is naive Pandemic...
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