Project Description: “GastroPak” Project is a partnership between the Earlham Institute, the National University of Sciences & Technology in Islamabad, the University of Warwick, the University of Agriculture Faisalabad, Trinity College Dublin, the Institute of Developmental Sciences UK, and Cranfield University. It combines social science, molecular biology, microbial ecology, bioinformatics, epidemiology, and environmental engineering to quantify transmission routes for non-viral gastro-enteric pathogens at multiple locations in Pakistan and determine the social context influencing transmission.