Reddit reviews House on Fire: The Fight to Eradicate Smallpox (California/Milbank Books on Health and the Public)

First of all, public health isn't useless and boring. But you are definitely uninformed, and it's hard to tell whether to blame that on a shitty attitude or a shitty education. Probably both.
What you should do, though, is do some (inspirational) reading in public health. I'd hope that your education would have provided you with this, but I guess not, from what you are saying, so here's a few recommendations, and I hope other people here will chime in with their own:

• Vaccinated
  
• House on Fire
  
• Strategy of Preventative Medicine