The idea was to start a nonprofit to help better treat tuberculosis and other infectious diseases afflicting low income populations. The idea came up with students in one of the first classes David taught on joining the faculty at Harvard University and became one of the principal inspirations of the Idea Translation Lab (Idea 8). Today MEND is in Cambridge, Paris, and Pretoria, and has received primary funding by the Bill & Melinda Gates Foundation. For more check this (and link tohttp://www.medicineinneed.org)