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 ...

In addition to increasing vaccine coverage in older adults ... for health officials to base recommendations for the use of PPV23 and newer PCVs in elderly adults on comparative evaluations ...

They also considered issues affecting the future use of PPV23 and pneumococcal conjugate vaccines in the elderly and adults at high risk of pneumococcal disease. PPV23 covers 80–90% of the ...