This book on Human Diseases is written with a view to meet curricular requirements of students at undergraduate and post graduate levels of Indian Universities. Diseases are illnesses impairing the normal physiological functioning of living organisms. The causative agents are virus, bacteria, protozoans, helminthes and others. The diseases chosen for this book are: measles, smallpox, chickenpox, AIDS, Ebola, Dengue, cholera, leprosy, tuberculosis, typhoid, malaria, amoebiasis, Diarrhoea, Filariasis, Cancer and Jaundice. The text describes causative agents, signs and symptoms, diagnosis, prevention, treatment, epidemiology and history of all 16 diseases. A table containing these factors has also been included for the convenience of readers to have an immediate idea about these human diseases.