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. HADHRAMOUT JOURNAL OF MEDICAL SCIENCES 2026, 22 (2).