We found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleHidden and dangerous. Polio could soon be wiped out--but only if scientists can track down the last carriers.AuthorsBranswell, HelenPublicationScientific American, 2013, Vol 309, Issue 2, p14ISSN0036-8733Publication typeJournal ArticleDOI10.1038/scientificamerican0813-14