Description:Optimism that communicable diseases are no longer a threat is clearly misplaced. New diseases, such as HIV, have appeared and some chronic conditions, such as gastric ulcers, have been shown to be caused by infectious agents. This book is about controlling such diseases, a task that is impossible without surveillance, knowledge of basic microbiology and multi-disciplinary public health teams. The book examines the challenges facing different countries regarding: surveillance; outbreak investigation; vaccines; and, specific infections including hepatitis, TB, influenza and gastroenteritis.