EPIDEMIOLOGIC STUDIES OF A LARGE URBAN OUTBREAK OF INFECTIOUS HEPATITIS.
D003141:Communicable Diseases; D004196:Disease Outbreaks; D016021:Epidemiologic Studies; D004813:Epidemiology; D006505:Hepatitis; D006506:Hepatitis A; D006801:Humans; D007484:Iowa; D012722:Sewage; D012961:Sociology; D005719:gamma-Globulins
D012722:Sewage; D005719:gamma-Globulins
EPIDEMIOLOGY; GAMMA GLOBULIN; HEPATITIS, INFECTIOUS; IOWA; SEWAGE; SOCIOLOGY