Mephisto spa [creativecommons license] via Wikimedia CommonsVaccines are already commonly used to prevent a variety of infectious diseases. Now they may become a key therapeutic strategy for a whole new host of disorders: autoimmune. New research from Peter Terness, Thilo Oelert, Sandra Ehser and their groups at Heidelberg University Hospital and German Cancer Research Center (Heidelberg, Germany) shows some success in preventing development of encephalitis in vaccinated mice, which is similar to the autoimmune disease multiple sclerosis (MS) in humans.