It has been found that the condition of the host is all important and that a healthy host will have a strong immune system and will thus be able, in most cases, to easily prevent disease and infection from occurring. Further more, it has been shown through statistical data that new diseases have sprung up since the inception of the vaccination process. Some of these new diseases are Cancer, Leukemia, Cot Death, Non-Hodgkins Lymphoma, Autism, Crone’s Disease and Chronic Asthma. None of these conditions were known to have occurred with any frequency prior to the inception of the vaccination process. Nature can’t be fooled. If you prevent one disease from occurring, then some other condition, which is equal to or worse than the former problem will pop up elsewhere. Modern medicine doesn't take into consideration vitamin deficiency and chemical poisoning as being the main causes of disease. Germs only occur after the body's immune system has been compromised.
References : Rethinking Pasteur’s Germ theory – by Nancy Appleton