the book is devoted to the diagnosis of specific congenital and/ or perinatal infections. As illustrated in the chapters about specific infections, the approach to diagnosis of a congenital or perinatally acquired infection in the neonate begins, when possible, with consideration and diagnosis of infection in the pregnant woman, knowledge of how the infection is transmitted, and the risk of that infection for the woman and her fetus or neonate. The possibility of congenital or perinatal infection in neonates is usually considered because of the diagnosis of, or concern about a s- cific infection in, a mother during pregnancy that can be transmitted to the neonate or because of clinical findings in the neonate at birth that suggest an infectious cause.