[Epidemiology and prevention of viral epidemic hepatitis].
D002690:Chlamydia Infections; D006505:Hepatitis; D006506:Hepatitis A / Q000453:epidemiology*; D006525:Hepatitis, Viral, Human; D006801:Humans
HEPATITIS, INFECTIOUS/epidemiology
Epidemiologia si profilaxia hepatitelor epidemice virotice.