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
Spread of which disease cannot be controlled by isolation ? 
Select and explain. 
A. Diphtheria, B. Neonatal tetanus, C. Cholera, D. Mumps
B: Neonatal tetanus
Answer: B: Neonatal tetanus 
Explanation: Ans. is `b' i.e., Neonatal tetanus