This new title in the Lecture Notes series aims to present the important facts and developments in this topical and rapidly expanding aspect of medicine to medical students and qualified and trainee practitioners in medicine and the allied professions, to enable them to keep abreast of the subject and interpret reports of further advances. Virology is becoming increasingly important in most, if not all, aspects of medicine, and the advances made in the subject, whether they be in the area of diagnosis, treatment, prevention or infection control, are relevant to all medical and allied health personnel.