This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Social & Preventive Medicine
[{'content': 'CTL inducing vaccines, Recombinant Adeno-associated Virus Vaccine (rAAV) and Modified Vaccinia Ankara (MVA) are being developed for \nSelect and explain. \nA. Tuberculosis, B. HIV/AIDS, C. Malaria, D. Leprosy', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ever since 1987, more than 30 HIV candidate vaccines have been tested in Clinical trials Phases I/II; Some of them are:\n\n– AIDSVAX (gp 120 based vaccine): only vaccine in Phase III trials\n– Cytotoxic T-Lymphocytes (CTL) Inducing vaccine\n– Recombinant adeno- associated virus (rAAV) vaccine\n– Modified Vaccinia ankara (mVA) vaccine\n– Subunit vaccine', 'role': 'assistant'}]