A professor has discovered a novel approach to developing a first-ever vaccine for three common pathogens that cause traveler’s diarrhea and kill more than 100,000 children living in developing countries each year. The vaccine yokes together proteins from pathogenic E.coli with sugars from Shigella and Camplyobacter jejuni — three bugs that are major causes of bacterial diarrhea globally. Currently no licensed vaccines exist against any of these pathogens.