It is hard to find an MPH degree or any other masters degree that is fully funded.
Usually funding…if any…will be in the form of a smaller scholarship from the school. If you are lucky you will have an employer that contributes. Some masters programs give full scholarships, but it depends and does not happen for most students.
I would do some research on Americorp. Also, when you are ready (not now) you can look into part time MPH programs. CUNY has one that can be done while working (for example).
First…get your foot in the door and gain some experience with a job.