This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Maternal and child care, Subject name: Social & Preventive Medicine
[{'content': 'Which of the following vaccines is Contraindicated during pregnancy? \nSelect and explain. \nA. Hepatitis B vaccine, B. Varicella vaccine, C. Influenza vaccine, D. Tetanus toxoid', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Live attenuated vaccines are contraindicated in pregnancy.Some examples of live attenuated : Viral: MMR vaccine, chicken pox vaccine, smallpox vaccine, oral polio vaccine (Sabin), rotavirus vaccine, and yellow fever vaccine.Bacterial: BCG vaccine,typhoid vaccineNote: Recently live attenuated influenza vaccine came into use, given as nasal spray.', 'role': 'assistant'}]