This book contains contributions of various authors in the field of respiratory syncytial virology. The primary focus in the book is on the fascinating pathophysiology of RSV and the book consists of substantial work on various mechanisms involved in the complex pathogenesis of the virus. The book also explicates epidemiologic and diagnostic aspects of RSV infection inclusive of a more clinical perspective of RSV disease. The book also discusses the treatment modalities, together with the search for a vaccine that is still not in view, thus constructing a circle that runs from experimental models of RSV associated lung disease over clinical perspectives of disease to the current advances of therapeutic and prophylactic approaches to human RSV infection.