This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Systemic Bacteriology Pa 1 (Gram Positive Cocci, Gram Negative Cocci), Subject name: Microbiology
[{'content': 'Xavier and Yogender stay in the same hostel of same university, Xavier develops infection due to group B meningococcus. After few days , Yogender develops infection due to Group - C meningococcus. All the following are true statement except: \nSelect and explain. \nA. Educate students about meningococcal trans-mission and take preventive measures, B. No Chemoprophylaxis available against both group B and group C, C. Vaccine prophylaxis of contacts of Xavier, D. Vaccine prophylaxis of contacts of Yogendra', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Chemoprophylaxis is neccesory for contacts - DOC for carriers and prophylaxis- Ciprofloxacin ,Rifampicin , ceftriaxone. Option 1 Risk factors: Overcrowding and semi-closed communities Travellers (Hajj pilgrims) and smoking Viral and Mycoplasma infection Option 2,3,4 FDA has approved Serogroup B meningococcal vaccines (Recombinant) - (Bexsero and Trumenba) Treatment: * DOC for treatment - Ceftriaxone and cefotaxime', 'role': 'assistant'}]