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': 'If mother is vaccinated for rubella in preconception period. Chances of rubella infection in the child is after how much period after bih - \nSelect and explain. \nA. 1 month, B. 2 months, C. 6 months, D. 12 months', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., 6 months Maternal rubella antibodies (IgG) are transferred from vaccinated/immune mother to child during fetal life. These antibodies last for 6 months and provide protection. After this period, the infant is susceptible to rubella.", 'role': 'assistant'}]