This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Social & Preventive Medicine
Chemoprophylaxis can be done for all of the following infections, except: 
Select and explain. 
A. Typhoid, B. Cholera, C. Meningitis, D. Diphtheria
A: Typhoid
Answer: A: Typhoid 
Explanation: Typhoid can be prevented by immunization not with chemoprophylaxis. But immunization does not give 100 per cent protection from Typhoid. Cholera, meningitis and diphtheria can be prevented using chemoprophylaxis. Ref: Park's Textbook of Preventive and Social Medicine, 19th Edition, Pages 106, 197