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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Romanò, Luisa Galli, Cristina Tagliacarne, Catia Tosti, Maria Elena Velati, Claudio Fomiatti, Laura Chironna, Maria Coppola, Rosa Cristina Cuccia, Mario Mangione, Rossana Marrone, Fosca Negrone, Francesco Saverio Parlato, Antonino Zotti, Carla Maria Mele, Alfonso Zanetti, Alessandro Remo |
| Description | Author Affiliation: Romanò L ( a Dipartimento di Scienze Biomediche per la Salute , Università degli Studi di Milano , Milano.); Galli C ( a Dipartimento di Scienze Biomediche per la Salute , Università degli Studi di Milano , Milano.); Tagliacarne C ( a Dipartimento di Scienze Biomediche per la Salute , Università degli Studi di Milano , Milano.); Tosti ME ( b Centro Nazionale di Epidemiologia, Sorveglianza e Promozione della Salute, Istituto Superiore di Sanità , Roma.); Velati C ( c Servizio di Immunoematologia e Medicina Trasfusionale, Policlinico S Orsola Malpighi , Bologna.); Fomiatti L ( d Servizio di Immunoematologia e Medicina Trasfusionale, ASST della Valtellina e dell'Alto Lario, Presidio di Sondrio , Sondrio .); Chironna M ( e Dipartimento di Scienze Biomediche ed Oncologia Umana, Università di Bari , Bari.); Coppola RC ( f Dipartimento di Sanità Pubblica , Medicina Clinica e Molecolare, Università di Cagliari , Cagliari.); Cuccia M ( g Settore Igiene Pubblica, Servizio di Epidemiologia e Prevenzione , ASP Catania , Catania.); Mangione R ( h Servizio di Sanità Pubblica, Epidemiologia e Medicina Preventiva, ASP Agrigento , Distretto di Licata , Licata , Agrigento.); Marrone F ( i UO Pediatria e Consultorio Familiare, Pediatria di Comunità, AUSL della Romagna-Cesena , Cesena.); Negrone FS ( j Dipartimento Prevenzione Collettiva Salute Umana , ASP Potenza , Potenza.); Parlato A ( k Dipartimento di Prevenzione, Servizio Dipartimentale di Epidemiologia e Prevenzione , ASL Napoli 2 Nord, Napoli.); Zotti CM ( l Dipartimento di Scienze della Sanità Pubblica e Pediatriche , Università di Torino , Torino.); Mele A ( b Centro Nazionale di Epidemiologia, Sorveglianza e Promozione della Salute, Istituto Superiore di Sanità , Roma.); Zanetti AR ( a Dipartimento di Scienze Biomediche per la Salute , Università degli Studi di Milano , Milano.) |
| Abstract | This study was aimed at assessing the anti-HBs persistence and immune memory 18-19 years after vaccination against hepatitis B in healthy individuals primed as infants or adolescents. We enrolled 405 teenagers (Group A) vaccinated as infants, and 409 young adults (Group B) vaccinated as adolescents. All vaccinees were tested for anti-HBs and anti-HBc antibodies; those found anti-HBc positive were further tested for HBsAg and HBV DNA. Eight individuals belonging to Group B were positive for anti-HBc alone, and were excluded from analysis. Individuals with anti-HBs concentration ≥10 mIU/ml were considered protected while those with anti-HBs concentration <10 mIU/ml were offered a booster dose and re-tested 2 weeks later. Overall, 67.9% individuals showed anti-HBs concentrations ≥10 mIU/ml (48.9% in Group A vs 87.0% in Group B, p<0.001). The antibody geometric mean concentration (GMC) was higher in Group B than in Group A (102.5 mIU/ml vs 6.9 mIU/ml; p<0.001). When boosted, 94.2% of vaccinees with anti-HBs <10 mIU/ml belonging to Group A and 94.7% to Group B showed an anamnestic response. Post-booster GMCs were similar in both groups (477.9 mIU/ml for Group A vs 710.0 mIU/ml for Group B, p = n.s.). Strong immunological memory persists for at least 18-19 years after immunization of infants or adolescents with a primary course of vaccination. Thus, booster doses are not needed at this time, but additional follow up is required to assess the long-life longevity of protection. |
| File Format | HTM / HTML |
| ISSN | 21645515 |
| Journal | Human Vaccines & Immunotherapeutics |
| e-ISSN | 2164554X |
| Language | English |
| Publisher | Taylor & Francis |
| Publisher Date | 2017-03-08 |
| Publisher Place | United States |
| Access Restriction | Subscribed |
| Subject Keyword | Discipline Immunology Discipline Therapeutics |
| Content Type | Text |
| Resource Type | Article |
| Subject | Immunology and Allergy Immunology Pharmacology |
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