The individuals solving medical mysteries, epidemiologists are the people who stand at the forefront of public health safety. With an academic background in subjects like biology, mathematics, medicine and statistics they aim to find the cause of the disease outbreak and the ways to prohibit the spreading of the disease. They try to relate the medical condition with different causes such as human behavior, environmental agents like toxins and spores genetic triggers and geographical constraints. An epidemiologist can solve the ‘medical mystery’ by asking several questions. For example, they can question causes of a disease like cancer and its prevention. Another aspect is to study the ‘vector’ or host which carries the virus and transmits. At the next level, they study the population at risk from a new pathogen. With their research and studies, they aim to reduce risks of public health and work for the prevention of these diseases. From Hippocrates who was the first epidemiologist and found words like ‘epidemic’ and ‘endemic’ to Louis Pasteur who carried out groundbreaking research work on Rabies, epidemiologists have become vital for public health safety. Discover this space for the list of famous epidemiologists with their biographies that include trivia and interesting facts about them and also trace their timeline and life history.