Emerging diseases are a major threat to modern societies, impacting individual welfare as well as economic development. The trend of newly emerging diseases has accelerated in the last two decades to such an extent that a new emerging infection is described at least once a year. The majority of such threats to modern society have been due to emergent viruses. This series of lecture notes provides grounding in understanding the drivers of disease emergence, the molecular processes which allow for virus diversity, the response of the host and environmental factors responsible for changing the balance between host and pathogen. Groups of viruses are described, each selected to illustrate certain features of disease emergence. These examples best illustrate how from past experience we may best be able to predict future outbreaks of novel diseases. Expecting the unexpected is a major challenge for health care personnel and public health officials alike, and the stakes have never been higher. As such, this book provides a timely overview of how best to prepare for disease emergence as it intends to increase awareness of how vulnerable modern society is in preparedness for such events. Key Features: • The book attempts to give equal weight to the molecular, clinical and epidemiological aspects of the diseases chosen to illustrate certain principles of disease emergence • Each chapter is self-contained with its own list of references, thus enabling the reader to be selective as circumstances require. References are kept to a minimum to aid the reader to progress through the book as easily as possible • Given the zoonotic nature of most emerging infections, veterinary aspects are also covered where appropriate

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