
The 23-valent pneumococcal polysaccharide vaccine is effective in elderly adults over 75 years old-Taiwan's PPV vaccination program
Keywords: PPV; pneumococcal polysaccharide vaccine; PCV; pneumococcal conjugate vaccine; IPD; invasive pneumococcal diseases; NHIRD; National Health Insurance Research Database; ACIP; Advisory Committee on Immunization Practices; JCVI; Joint Committee on Vaccinatio