Infectious diseases are those, which are caused by the toxins released by harmful organisms. They are also called transmissible diseases or communicable diseases. Some of the organisms causing infections are bacteria, viruses, pinworms, fungi, tapeworms, fleas, and lice, etc. The topics included in this book on infectious diseases are of utmost significance and bound to provide incredible insights to readers. It elucidates the contemporary approaches towards the pathology and treatment of infectious diseases. It is an essential guide for all academicians, researchers and those who wish to pursue this discipline further.