In this post in the PLoS “Speaking of Medicine” blog, guest blogger Oliver Sabot, executive vice president of the Clinton Health Access Initiative, “reflects on the challenge and opportunity of scaling-up access to effective treatment for diarrhea, the second largest cause of child mortality globally.” In the post, Sabot “reflect[s] on a visit to a program to improve the use of zinc and oral rehydration salts to treat diarrhea in a rural area of the Indian state of Gujarat run by the nonprofit Family Health International 360” (8/15).