An up-to-date study of medical virology. It features on the taxonomy, the structure and the replication of virus in general; the principle and application of electron microscope and the serological techniques for differential diagnosis of viruses, by which mainly on the field of clinical virology including hepatitis viruses, herpes virus, parvovirus, piconavirus, influenza viruses (ex. H1N1) and the coronaviruses that causes respiratory distress (ex. SARS).