The researchers studied two leading pneumococcal vaccines: PCV13 and PPV23. "Vaccination has substantially reduced the morbidity and mortality of bacterial diseases," asserted Dr. Juanjuan Wang ...

Two types of pneumococcal vaccine are available. The 23-valent pneumococcal polysaccharide vaccine (PPV23) is used in adults and children >2 years of age. By contrast, pneumococcal conjugate ...

[134] In the face of these changes, it will be critically important for health officials to base recommendations for the use of PPV23 and newer PCVs in elderly adults on comparative evaluations of ...