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Escherichia Coli

Scientists at Kansas State University target Escherichia coli

Published in TB and Outbreaks Week, August 5th, 2008

"The goal of this study was to determine whether immunosuppression plays a role in the level and duration of fecal shedding of Escherichia coli O157. Immunosuppression was induced in calves by administering dexamethasone," scientists in the United States report.

"Six 1-week-old Holstein bull calves were injected intramuscularly with dexamethasone and orally inoculated with 10(9) CFU of a mixture of three nalidixic-acid resistant strains of E. coli O157:H7. Five 1-week-old Holstein bull calves that were given the same oral inoculation of E. coli O157:H7, but not the dexamethasone injections, served as controls. All calves were examined daily and fecal samples were...

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