This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Epidemiology, Subject name: Social & Preventive Medicine
No chemoprophylaxis for 
Select and explain. 
A. Typhoid, B. Chicken pox, C. Influenza, D. Cholera
B: Chicken pox
Answer: B: Chicken pox 
Explanation: Cholera: Tetracycline or furazolidone for household contacts Bacterial conjunctivitis: Erythromycin ophthalmic ointment Diphtheria: Erythromycin Influenza: Oseltamivir Meningitis, meningococcal: Ciprofloxacin, and minocycline Plague: Tetracycline for contacts of pneumonic plague Ref: 25th edition, Park's Textbook of Preventive and Social Medicine, Page no. 137