University of Washington - Department of Pathology, Massachusetts General Hospital - Division of Infectious Diseases, Harvard University - Massachusetts General Hospital, University of Washington, Partners In Health/Zanmi Lasante, Haiti, Partners In Health/Zanmi Lasante, Haiti, Government of the United States of America - Centers for Disease Control and Prevention (CDC), Laboratoire National de Santé Publique (LNSP), Ministry of Public Health and Population - National Laboratory of Public Health, Harvard University - Massachusetts General Hospital, University of Washington, Partners In Health/Zanmi Lasante, Haiti, International Centre for Diarrheal Disease Research (icddr,b), - Infectious Disease Division, International Centre for Diarrheal Disease Research (icddr,b), International Centre for Diarrheal Disease Research (icddr,b), University of Washington, Harvard University - Massachusetts General Hospital and Harvard University - Massachusetts General Hospital