The following are multiple choice questions (with answers) about medical knowledge.   **Question:** Pneumococcal vaccine PCV 23 polysaccharide has shown the best results in the following people   (A) Sickle cell anemia   (B) Cystic fibrosis   (C) Child less than 2 year age   (D) Recurrent otitis media and sinusitis
['(A) Sickle cell anemia <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Sickle cell anemia \n (B) Cystic fibrosis \n (C) Child less than 2 year age \n (D) Recurrent otitis media and sinusitis <> possible answers', '  Pneumococcal vaccine PCV 23 polysaccharide has shown the best results in the following people <> context@']