This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Respiratory system, Subject name: Medicine
[{'content': 'Drug used in RSV infection in children \nSelect and explain. \nA. Rituximab, B. Palivizumab, C. none, D. Omalizurnab', 'role': 'user'}, {'content': "Answer: B \nExplanation: Palivizumab is a chimeric mouse-human monoclonal IgG antibody against human respiratory syncitial virus infection.Combined ribavarin-palivizumab therapy is being evaluated for immunosuppressed children with HRSV pneumonia. Ref:Harrison's medicine-19th edition,page no:1206.", 'role': 'assistant'}]