title: Control of hepatitis b infection in an institution.
mesh_terms: D000293:Adolescent; D000367:Age Factors; D002648:Child; D002675:Child, Preschool; D004796:Clinical Enzyme Tests; D006266:Health Education; D006509:Hepatitis B / Q000175:diagnosis / Q000517:prevention & control*; D006801:Humans; D007558:Italy