Transmission and infectious dose of Escherichia coli O157:H7 in swine.

  title={Transmission and infectious dose of Escherichia coli O157:H7 in swine.},
  author={Nancy A Cornick and Amy F Helgerson},
  journal={Applied and environmental microbiology},
  volume={70 9},
Escherichia coli O157:H7 is only occasionally isolated from healthy swine, but some experimentally infected animals will shed the organism in their feces for at least 2 months. Potential explanations for the paucity of naturally occurring infections in swine, as compared to cattle, include a lack of animal-to-animal transmission so that the organism cannot be maintained within a herd, a high infectious dose, or herd management practices that prevent the maintenance of the organism in the… CONTINUE READING


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