If you eat undercooked beef, it’s not just E. coli you have to worry about. Salmonella may be predominately associated with poultry, but beef can also be contaminated with the pathogen. According to the Centers for Disease Control and Prevention, 23 percent of the outbreaks attributed to beef between 2009 and 2013 were caused by Salmonella. Recent multi-state outbreaks linked to ground beef include Salmonella Enteritidis, which infected 46 people in nine states in 2012, and Salmonella Typhimurium, which infected 22 in six states in late 2012 and early 2013. A few years ago, scientists began to study lymph nodes
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