[VIRAL HEPATITIS IN HOSPITALS; ITS PREVENTION].
D006506:Hepatitis A; D006525:Hepatitis, Viral, Human; D006761:Hospitals; D006801:Humans; D009784:Occupational Diseases
HEPATITIS, INFECTIOUS; HOSPITALS; OCCUPATIONAL DISEASES
LES H'EPATITES 'A VIRUS DANS LE MILIEU HOSPITALIER; LEUR PR'EVENTION.