This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Communicable diseases, Subject name: Social & Preventive Medicine
For controlling an outbreak of cholera, all of the following measures are recommended except - 
Select and explain. 
A. Mass chemoprophylaxis, B. Proper disposal of excreta, C. Chlorination of water, D. Early detection and management of cases
A: Mass chemoprophylaxis
Answer: A: Mass chemoprophylaxis 
Explanation: <p> Mass chemoprophylaxis. Drugs used are tetracycline or furazolidone. Park&;s textbook of preventive and social medicine,K.Park,23rd edition,page no:232-233. <\p>