Change in epidemiology and preventive medicine.
D003141:Communicable Diseases / Q000266:history; D004739:England; D004813:Epidemiology / Q000266:history*; D049672:History, 19th Century; D049673:History, 20th Century; D006801:Humans; D011315:Preventive Medicine / Q000266:history*; D012955:Societies, Medical / Q000266:history