Preface- emerging viruses: from early detection to intervention -- How to tackle natural focal infections: from risk assessment to vaccination strategies -- Human-animal interface: the case for influenza interspecies transmission -- Bats and emerging infections: an ecological and virological puzzle -- The Middle East respiratory syndrome coronavirus- a continuing risk to global health security -- Emerging Zika virus infection: a rapidly evolving situation -- Syrian hamsters as a small animal model for emerging infectious diseases: advances in immunologic methods -- Enabling rapid response to the 2014-2016 ebola epidemic: the experience and the results of the National Institute for Infectious Diseases Lazzaro Spallanzai -- Prioritization of high consequence viruses to improve European laboratory preparedness for cross-border health threats -- The potential of social media and internet-based data in preventing and fighting infectious diseases: from internet to Twitter -- Erratum: Emerging Zika virus infection: a rapidly evolving situation -- Index.