Graduate Prerequisites: MS or doctoral candidates in Epidemiology who have completed all academic course requirements for degree and are completing their thesis or dissertation. - PhD in Epidemiology students who have completed all academic course requirements, must register for Continuing Study every Fall and Spring semester until they have successfully defended their theses/dissertations and have graduated from SPH. Students are charged the equivalent of two credits of tuition, student health insurance, and all relevant fees, and are certified as full time.