title: [Hepatitis B at an open institution for the mentally retarded. Immunogenic effect of a recombinant anti-hepatitis-B vaccine].
abstract: The diffusion of hepatitis B virus was investigated in an open institution for mentally retarded patients, where 24 patients with Down's syndrome (DS) and 94 with other types of mental retardation (OMR) were being cared for. The immunogenic response to a recombinant vaccine intramuscularly injected to the deltoid muscle at a dosage of 20 mcg in the months 0, 1 and 6 was also evaluated. Seropositivity for some hepatitis B serum marker was found in 19.4% of patients (12.5% of those with DS and 21.2% of those with OMR). HBsAg was found in 8.3% of patients with DS and in 4.2% of those with OMR. The seroconversion to antiHBs induced by the vaccine 8 months after the first dose was found in 72.3% of DS and in 100% of OMR. The poor immunogenic response in DS was attributed to age, as in patients younger than 20 years it was 91.6% while in those over that age it was only 33.3%. It was concluded that in open institutions for mentally retarded patients there is a risk of hepatitis B infection, also shown in closed institutions, and that recombinant hepatitis B vaccine is highly immunogenic in this population, although it has been found that in patients with DS the age has a very marked negative influence on the response to the vaccine.
authors: Servicio de Pediatría, Hospital Sant Jaume i Santa Magdalena, Mataró, Barcelona.
authors: O
authors: O
authors: García
authors: M
authors: M
authors: Bruguera
authors: A
authors: A
authors: Mayor
authors: J M
authors: JM
authors: Sánchez-Tapias
authors: O
authors: O
authors: Vall
authors: J
authors: J
authors: Rodés
mesh_terms: D000293:Adolescent; D000328:Adult; D003430:Cross-Sectional Studies; D003631:Day Care, Medical; D004314:Down Syndrome / Q000097:blood / Q000150:complications*; D005260:Female; D006509:Hepatitis B / Q000150:complications / Q000517:prevention & control*; D006510:Hepatitis B Antibodies / Q000096:biosynthesis* / Q000097:blood; D017325:Hepatitis B Vaccines; D006801:Humans; D008607:Intellectual Disability / Q000097:blood / Q000150:complications*; D008297:Male; D014611:Vaccination; D014614:Vaccines, Synthetic / Q000276:immunology*; D014761:Viral Hepatitis Vaccines / Q000276:immunology*
chemical_list: D006510:Hepatitis B Antibodies; D017325:Hepatitis B Vaccines; D014614:Vaccines, Synthetic; D014761:Viral Hepatitis Vaccines
vernacular_title: Hepatitis B en una institución abierta para retrasados mentales. Efecto inmunogénico de una vacuna recombinante antihepatitis B.