The Elsevier’s project, Influenza: Complete Spectrum–I, under the aegis of ECAB Clinical Update, aims at a comprehensive, well-illustrated and state-of the-art survey of salient aspects of the age-old infectious disease, influenza, which is notorious for causing seasonal epidemics and, rarely, pandemics. A hallmark of influenza viruses is their ability to cause global worldwide epidemics affecting a great number of individuals, or pandemics. Pandemic episodes are solely attributed to influenza A viruses and they occur every 10–50 years. Today, it is clear that influenza cannot be eradicated, at least in the foreseeable future. We are therefore, condemned to live with it though with better preparedness and endeavor to cope with its onslaught. The book, Influenza: Complete Spectrum–I, deals with the fundamentals and allied matters concerning influenza.