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“...Theory predicts that selection for pathogen virulence and horizontal transmission is highest...”
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“... by the stable manifold of a saddle point. We define a dimensionless "virulence" parameter which combines...”
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“... distinct groups: some are of low virulence, and they are encountered worldwide; others, mainly encountered...”
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“...We investigated the susceptibility of virulent and avirulent strains of Haemophilus ducreyi...”
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“...Virulent strains of Yersinia pestis, Y. pseudotuberculosis and Yersinia enterocolitica invariably...”
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“... as a virulence factor, a wild-type strain that had phenoloxidase activity and mutants which lacked...”
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“...The concepts of pathogenicity and virulence have governed our perception of microbial harmfulness...”
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“.... In addition to the toxin and phosphatase, several other moieties that may serve as virulence factors...”
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“...ColV plasmids are a heterogeneous group of IncFI plasmids which encode virulence-related properties...”
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“... to increase significantly in the serum of mice during virulent malaria infection. Although erythropoiesis...”
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“... subsequent challenge with potentially lethal doses of wild MCMV. Virulence could be rapidly restored by back...”
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