A lab technician at the Mothers' Milk Bank Northeast in Newton Upper Falls, Mass., prepares donated breast milk for pasteurization in August 2012. The process kills harmful bacteria. Elise Amendola/Associated Press hide caption toggle caption Elise Amendola/Associated Press Shots - Health News Breast Milk Bought Online Has High Levels Of Bacteria October 21, 2013 Sharing breast milk has become increasingly popular thanks to milk sharing websites and Facebook groups. A study looked at 101 samples of breast milk sold online and found elevated bacteria counts. But it's not clear how that could affect babies' health, or if any babies have gotten sick from milk obtained online.