We vaccinate against lots of childhood diseases now because we are told that having the diseases is a bad thing and leads to thousands of deaths. However, when we look at the figures from the Office for National Statistics, we see that 95% of the people who used to die from measles stopped dying before the vaccine was introduced in 1968 and similarly 99% of the people who used to die of whooping cough. The mortality rate for tuberculosis fell no differently in countries that did and did not use the BCG vaccine. Scarlet fever, rheumatic fever and typhus were deadly killers. They all disappeared without a vaccine. Why? Here Jayne Donegan for the College of Naturopathic Medicine address the question.