This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Virology, Subject name: Microbiology
[{'content': 'Post exposure prophylaxis is applicable in all except: \nSelect and explain. \nA. HIV, B. Japanese encephalitis, C. Varicella zoster, D. Swine influenza', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. B. Japanese encephalitisHIV - Tenofovir + Lamivudine + Efavirenz; Varicella zoster - Acyclovir or Oka vaccine; Swine influenza - Oseltamivir or quadrivalent vaccine.', 'role': 'assistant'}]