Germ theory denialism

Germ theory denialism is the pseudoscientific belief that germs are not the main cause of infectious disease, and that the germ theory of disease does not take into account internal and external factors such as those described in traditional Chinese medicine. It usually involves arguing that Louis Pasteur's model of infectious disease is illogical, and that Antoine Béchamp's theory of disease has more logical merit. In fact, its origins are rooted in Béchamp's theory of pleomorphism. One main, yet discarded, variation is known as terrain theory which postulates that germs morphologically change in response to environmental factors, subsequently causing disease, rather than germs being the sole cause of it.