Infectious disease and social change. I.
D002644:Chickenpox / Q000453:epidemiology; D003139:Common Cold / Q000453:epidemiology; D003428:Cross Infection; D003872:Dermatitis / Q000453:epidemiology; D005759:Gastroenteritis / Q000453:epidemiology; D006801:Humans; D007239:Infections; D008457:Measles / Q000453:epidemiology; D012141:Respiratory Tract Infections / Q000453:epidemiology; D012480:Salmonella Infections / Q000453:epidemiology; D012922:Social Change; D015004:Yellow Fever / Q000453:epidemiology