Priyanka Snl

Hi, I am a physiotherapist (India) with an MPH (UK) living in Canada. I want to pursue a career in Epidemiology. Although I have a masters degree in public health from the University of Brighton (UK), I m unable to find jobs in epidemiology. I reckon its because of the lack of experience in the field. I would like to do a course in epidemiology to advance my career. Could anybody who's already in the field, shed some light on this? Also, are online courses from reputed universities as good as on campus degrees? Thank you in advance.