It always gets me when I see some anti-vaccine crusader on the tube talking about mercury and human breast milk etc etc etc yada yada yada young, healthy parents who basically DO NOT HAVE A CLUE!!!
These diseases, polio, whooping cough. smallpox, killed MILLIONS.
Part of the reason old-time families had a lot of kids was it was not unusual for a few of them to never survive until adulthood.
This is serious stuff, and to try to make it out like some kind of new-age, kumbaya, back to nature, herbalist BS is dangerous and destructive.