"Publications by the World Health Organization show that diphtheria is steadily declining in most European countries, including those in which there has been no immunization. The decline began long before vaccination was developed. There is certainly no guarantee that vaccination will protect a child against the disease; in fact, over 30,000 cases of diphtheria have been recorded in the United Kingdom in fully immunized children."
--
Source : Leon Chaitow (2011). “Vaccination And Immunisation: Dangers, Delusions and Alternatives (What Every Parent Should Know)”, p.71, Random House
