Dr. Sireen Slides Introduction to Epidemiology Historical evolution of Epidemiology Chain of Infection and Natural History of Desease Dr. Sireen Activities Incidence and Prevalence Additional Files & Notes Translation for Introduction to and History of Epidemiology by Haya Emad Translation for Historical Evolution of Epidemiology by Haya Emad Translation for CHAIN OF INFECTION AND NATURAL HISTORY OF DISEASE by Haya Emad