This book is a complete guide to the diagnosis and management of any infectious disease which may affect the mother or the fetus during pregnancy. Pregnancy is a unique condition in which the interplay of endocrine and immune influences leads to altered severity and susceptibility to infectious diseases. These infections, in turn, are a substantial cause of maternal and perinatal morbidity. The book discusses the immunologic, clinical and epidemiologic evidence for altered responses during pregnancy. Several infections have unique consequences in pregnancy. Some infections have vertical transmission, and their management focuses on decreasing perinatal transmission. Others can be transmitted transplacentally and cause congenital infection. While still, other common infections like gastroenteritis, UTI, tuberculosis, leprosy or certain dermatological and oral conditions can cause pregnancy complications.