- Polly told me that yesterday she tried to vaccinate the cat, with a mixture of ground chalk and vinegar! - "The Wide Awake Girls in Winsted", Katharine Ellis Barrett.
- Vaccinate several children of the same age with the same quantity of virus, applied to the same part, and the symptoms will not be quite alike in any of them, either in kind or intensity; and in some cases the differences will be extreme. - "Essays: Scientific, Political, & Speculative, Vol. I", Herbert Spencer.
- Her parents were no worse than the Monroe Street mother who refused to let the health officer vaccinate her baby, because her crippled boy, with one leg an inch shorter than the other, had " caught it"- the lame leg, that is to say- from his vaccination. - "The Children of the Poor", Jacob A. Riis.