The calculation on cost/benefit analysis was incorrectly supplied for the article, “Genetically Resistant Line Stops E. coli Cold,” pages 10-12, Nov. 15, 2001, National Hog Farmer.

Based on $1/dose, multiplied by six doses/sow/year, divided by 25 pigs/sow/year, the cost is $.24/pig, not $.10/pig, as stated in the article.