I’m confused as to whether it is better to have some medical certification before entering the school or to just enter with my non-medical bachelor’s degree?

Neither one nor the other is better,; however, to complete the International Health Development Course some knowledge of public health is required. As for the Tropical Medicine Course, admission requirements are that the student needs to be a doctor with two years or more clinical experience. Regarding the Health Innovation Course, it covers many areas not just one particular field of specialty.