Further Research Studies Support E. coli Cattle Vaccine Efficacy
-- significant reduction in bacteria shed by feedlot cattle; reduction in colonization --
BELLEVILLE ON – March 14, 2005 – Bioniche Life Sciences Inc. (TSX: BNC), a research-based, technology-driven Canadian biopharmaceutical company, today announced that positive results were seen in the three latest University of Nebraska feedlot studies utilizing the E. coli O157:H7 cattle vaccine.
In one study, with cattle receiving three doses of vaccine, there were 73% fewer animals detectably shedding E. coli O157:H7 bacteria in their manure. Another three-dose study analyzed colonization in the terminal rectal junction in the cattle, where the bacteria are known to colonize and reproduce. After vaccination, 97% fewer animals had detectable bacterial colonization. A third study, involving 19 feedlots and 21,691 cattle, demonstrated that the vaccine was effective in commercial feedlot settings. In that study, vaccinated cattle were 75% less likely to have detectable bacterial colonization.
“The studies were conducted in Nebraska during the summers of 2003 and 2004,” said Dr. Rodney Moxley, Professor and Interim Department Head of the Department of Veterinary and Biomedical Sciences at the University of Nebraska - Lincoln. “This is the third year of data generated through clinical trials of this vaccine, and we are seeing consistently satisfactory results in terms of its effectiveness in feedlot settings where E. coli O157:H7 bacteria are prevalent.” The results of the latest University of Nebraska studies will be published in a peer-reviewed journal later this year.
Bioniche is the commercialization and marketing partner in a strategic alliance with the University of British Columbia, the Vaccine & Infectious Disease Organization at the University of Saskatchewan, the University of Nebraska, Technology Partnerships Canada, and the Alberta Research Council.
“The consistent results in the University of Nebraska efficacy studies give us confidence as we move toward licensing of this important vaccine,” added Graeme McRae, President & CEO of Bioniche Life Sciences Inc. “These data generated by the University of Nebraska will be included in our upcoming submissions to the Canadian Food Inspection Agency (CFIA) and the United States Department of Agriculture (USDA) as part of the regulatory process.”