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