Starting a Career

Hello, I just graduated in August with a Masters in Infectious Disease and Global Health and have been applying to Epidemiologist positions relentlessly since then and have generated little to no interest from the positions I applied for. How can I make myself a better candidate and how can I get starter? I'm very passionate about this field and really want to start my career. Where should I be looking and how can I get my foot in the door and start? Thank you!