By Richard Knox in NPR

Today, 50,000 people living in the slums of Port-au-Prince will start to get immunized against the disease. This weekend, another 50,000 villagers in the low rice-growing areas of the Artibonite River valley will get their first doses of an oral cholera vaccine. Dr. Paul Farmer of Partners In Health, which is organizing the rural arm of the project, says he's already working on that more ambitious goal. "What I would hope for Haiti and for the Congo and other places with cholera."

http://www.npr.org/blogs/health/2012/04/12/150493770/vaccination-against-cholera-finally-begins-in-haiti