The chapters in this topical volume of Advances in Microbiology, Infectious Diseases and Public Health present exciting, insightful observations on emerging viral infections like influenza, Middle East respiratory syndrome, or mosquito-transmitted diseases, as well as the potential of social media in preventing and fighting infectious diseases.  This rapidly developing field of study, which involves interdisciplinary and challenging research conducted in both industrialized and limited-resource countries, can yield vital information for the life and social sciences, for public health, and for healthcare in general. The aim of this volume is to contribute to the development of knowledge on emerging infections in the endless struggle between viruses and man.  The chapters selected are not intended as a systematic collection of all emerging infections, but instead highlight recent discoveries and provide insights on today’s hot topics. The book offers a valuable resource for all scientists working in the field of emerging viral infections and possible vaccines, as well as for laboratory and medical staff whose work involves preventing, controlling and combatting infectious diseases.