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Sahar M Sabbour Conference 2023 Presentation Project title Post vaccination Hepatitis B antibody titre in a sample of students vaccinated during a campaign in a medical faculty 2021-2022 Authors and Affiliations Sahar M Sabbour1, Maha M Elgaafary1 1. Department of Community, Environmental and Occupational Medicine, faculty of medicine Ain Shams University Abstract Background Persistence [...]