This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Epidemiology, Subject name: Social & Preventive Medicine
[{'content': 'Which of the following vaccine should not be given during pregnancy? \nSelect and explain. \nA. HBV, B. Measles, mumps, rubella, C. Typhoid, D. Cholera', 'role': 'user'}, {'content': 'Answer: B \nExplanation: .such live attenuated viral vaccines are not given during pregnancy and other immunocompromised states. ref:park&;s textbook,22 nd ed,pg 132', 'role': 'assistant'}]