Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The term “typhus” refers to infectious diseases that are caused by Rickettsia bacteria and manifest as acute febrile illnesses. Typhus is a disease of a long and deadly history, epidemic typhus being its deadliest form. However, the disease can be prevented by good living conditions and hygiene standards. Learn more about health conditions belonging to the typhus group, their causes, symptoms and treatment in this book.