[staunch]

Consider that you're probably just in a bad state of mind. You shouldn't quit your job or write these people off while you're in a bad place mentally.

When you're feeling better, you may find that your friend was just exploring his dangerous thoughts in private with you, and your roommate is just ignorant and/or nervous about vaccines.

You should probably just relax and focus on getting some strenuous exercise, good sleep, healthy food until you feel better.