Homeopaths have, since about 200 years, insisted that their remedies are efficacious treatments for infectious diseases. As evidence for this notion, they often produce epidemiological data showing that a group of infected patients treated homeopathically had better results than another group treated conventionally. While potentially interesting, such findings never constitute proof, because the two groups might not have been comparable and many other factors could have determined the observed outcome. In fact, these stories are prime examples for the need of rigorously controlled trials when testing the efficacy of medical treatments...
Read on: Homeopathy for infectious diseases: it is time for homeopaths to stop lying
