Pandemic influenza is an emerging pathogen that has serious public health consequences. Following recent avian and swine influenza outbreaks, preparedness against pandemic influenza on national and international scales is of vital importance. With a strong emphasis on practicality, this book covers areas such as influenza epidemiology, virology and immunology, vaccinology, pharmaceutical and public health countermeasures, policy issues, biomathematical modeling and ethics. Each chapter raises five key questions and answers them in clear and concise sections, detailing relevant model studies and providing select papers for further reading. Updated throughout, this second edition contains new contributions on surveillance, international regulations and local pandemic responses.