Actually I have been vaccinated for bubonic plague, as well as polio, measles, mumps, rubella, hep A, hep B, diphtheria, tetanus, meningitis, typhoid, yellow fever, smallpox, pneumonia and influenza.

All because I am an old fart, was in the army and have worked in some "interesting" parts of the world. I've seen people who survived smallpox and lots of other nasties. I am beginning to believe that what we need is a small nasty epidemic to educate the young.