Social & Preventive Medicine 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 💡 Explanation Pneumococcal vaccine PCV 23 polysaccharide has shown the best results in the following people ✓ Correct Answer: A. Sickle cell anemia