Mean weekly swine TB condemn rates, which seasonally ranged from 5.7 to 21.4 per 100,000 between 2007 and 2009 (mean 010.7, SD03.0), increased above typical levels beginning January 2010 and rose even higher beginning January 2011 (Fig. 1) . Most of the increase was due to condemns in Basin 3, which experienced 670/ 100,000 weekly STB condemns at the height of the 2011 outbreak. Summary data for Basins 1, 2 and 4 indicate that condemn profiles remained at nonoutbreak levels over the 4-year data series. Retrospective analysis by individual facility suggests that while condemns in Basin 1 appeared to coincide with typical seasonal STB rates, the pattern of alerts for one facility may have signaled STB outbreaks in both outbreak periods.