Related Experiment Video
Updated: Jul 20, 2026
Experimental Human Pneumococcal Carriage
Published on: February 15, 2013
Clinical inquiries. Should patients receive 23-valent pneumococcal vaccination more than once?
John Whiteside1, Michael Grover, Kristin Hitchcock
1Department of Family Medicine, Mayo Clinic, Scottsdale, AZ USA.
Abstract:
No patient-oriented evidence supports pneumococcal revaccination of any patient (high-risk or otherwise). Antibody levels may be augmented by revaccination; however, the clinical efficacy of revaccination, even among high-risk patients, is unknown. Revaccination is recommended by the Advisory Committee on Immunization Practices (ACIP) in certain circumstances (strength of recommendation [SOR]: C, expert opinion based on physiology/bench research). Revaccination once appears to be safe, especially if provided 5 years or more after primary vaccination (SOR: B, based upon consistent results of cohort studies and nonrandomized prospective trials).
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