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
Isolation period, false is - 
Select and explain. 
A. Chicken pox - 6 days after onset of rash, B. Herpes zoster - 6 days after onset of rash, C. Measles - up to 3 days after onset of rash, D. German measles - 7 days after onset of rash
D: German measles - 7 days after onset of rash
Answer: D: German measles - 7 days after onset of rash 
Explanation: Ans. is 'd' i.e., German measles - 7 days after onset of rash