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A large 7-year vaccination trial was conducted in 15 flocks of goats and 7 flocks of sheep, known to be infected with Mycobacterium avium subsp. paratuberculosis (MAP), in Northern Greece. A total of 3665 kids and 1685 lambs, 7 -30 days old, were vaccinated during 1995-1999. Seven hundred and seventy-five kids and 413 lambs were kept as unvaccinated controls. For each trial, the Incidence Rate Ratio (IRR), with respective exact 95% confidence intervals, was calculated. All IRR point estimatesdoi:10.4236/jibtva.2013.24007 fatcat:erzxk3kabbbd3dadkfn5bpzxay