WHAT TO INTERN/VOLUNTEER ABROAD. NEED HELP FINDING RIGHT ONE.?

i am finishing up my last year of high school and i am also finishing up my first semester in college. i will receive my EMT-basic certification about the same time i graduate high school and i want to spend the summer working in a different country helping people who really need my help. i want to go to Africa or Nepal or something where i can make a difference. i want to work in a hospital setting where i can put my EMT-B skills to work. i know i have to pay so i am willing to pay up to $1200.00 and i am looking for a 4-8 week program. i want that $1200.00 to cover airfare(both ways), room and broad. any others fee like fun spending i will bring extra thanks for the help.