From what I know, the Fogarty International Center program is available to undergraduate students in the form of the Minority International Research Training program... (you know if you are eligible for this program 🙂) I actually spent two undergraduate summers in Ecuador doing medical anthropology/public health research, supported by research awards at the University of Virginia. Both paid not only for travel expensies, but meals, lodging, immunizations, etc. I ended up using some money to found a non-profit organization, and even had money left that I had to return to the University! Does your University have any undergraduate research awards available to apply for?