“Detection the Persistence of Antibodies of Hepatitis B Surface Antigen among Healthy Individuals Vaccinated with Hepatitis B Virus Vaccine in Mukalla- Hadhramout/Yemen: Detection the Persistence of Antibodies of Hepatitis B Surface Antigen among Healthy Individuals Vaccinated with Hepatitis B Virus Vaccine in Mukalla- Hadhramout/Yemen” (2026) Hadhramout University Journal of Natural & Applied Sciences, 22(2). Available at: https://hu.edu.ye/hu-publications/journals/index.php/hujnas/article/view/885 (Accessed: 24 July 2026).