This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Infectious disease, Subject name: Pediatrics
[{'content': 'Newborns have transplacentally acquired immunity against all of the following diseases except \nSelect and explain. \nA. Measles, B. Peusis, C. Diphteria, D. Poliomyelitis', 'role': 'user'}, {'content': 'Answer: B \nExplanation: *Peussis is an acute highly contagious respiratory tract infection caused by BORDETELLA PEUSSIS . * Neither natural disease nor vaccination provides complete or lifelong immunity against peussis re-infection or disease. * Protection against typical disease begins to wane 3-5 yrs after vaccination and is unmeasurable after 12 yrs. Reference: Nelson textbook of pediatrics 21st edition Page 944', 'role': 'assistant'}]