The following are multiple choice questions (with answers) about medical knowledge.   **Question:** After the appearance of rash, prophylactic isolation of measles case is necessary for a minimum of:September 2007   (A) 2 days   (B) 5 days   (C) 7 days   (D) 9 days
['(B) 5 days <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) 2 days \n (B) 5 days \n (C) 7 days \n (D) 9 days <> possible answers', '  After the appearance of rash, prophylactic isolation of measles case is necessary for a minimum of:September 2007 <> context@']