The 6th edition includes key points and integrative questions in every chapter, as well as text boxes emphasizing take-home messages, evidence underpinning the ... » 

The 6th edition includes key points and integrative questions in every chapter, as well as text boxes emphasizing take-home messages, evidence underpinning the main concepts, and further information for more advanced readers. Prevention and therapy, evolution and emerging viruses receive particular attention and specific chapters address the major infectious challenges posed by HIV, pandemic influenza and BSE. «