The First Use of the Global Oral Cholera Vaccine Emergency Stockpile: Lessons from South Sudan. Sunday 1 November 2015 Abubakar A Azman AS Rumunu J Ciglenecki I Helderman T West H Lessler J Sack DA Martin S Perea W Legros D Luquero FJ PLoS medicine 2015 Nov ; 12(11); e1001901. doi: 10.1371/journal.pmed.1001901. Epub 2015 11 17 Open PDF Link to journal page