Pneumococcal Vaccination Guidelines

Current Recommendations

• The Advisory Committee on Immunization Practices (ACIP) recommends that PCV20 alone is adequate for protection against pneumococcal disease without the need for additional PPSV23 vaccination, as stated in the 2024 guidelines 1
• The ACIP specifically notes that if PCV21 or PCV20 is used in place of any dose of PPSV23, the series is complete, and it need not be followed by additional pneumococcal vaccine doses 1

Rationale for PCV20 Alone Being Sufficient

• Conjugate vaccines like PCV20 induce a T-cell dependent immune response that creates memory B-cells, providing more durable protection compared to polysaccharide vaccines like PPSV23 2

Special Considerations Based on Vaccination History

• If a person previously received PPSV23 only, a single dose of PCV20 is recommended ≥1 year after the last PPSV23 dose, with no need for additional PPSV23, according to the Centers for Disease Control and Prevention (CDC) 3
• If a person previously received PCV13 only, a single dose of PCV20 is recommended ≥1 year after the PCV13 dose, with no need for additional PPSV23, as per the CDC guidelines 4
• If a person previously received both PCV13 and PPSV23, the series is considered complete, but shared clinical decision-making regarding an additional dose of PCV20 may be considered ≥5 years after the last pneumococcal vaccine dose, as recommended by the ACIP 5

Common Pitfalls to Avoid

• Unnecessary revaccination with PPSV23 after PCV20 is not recommended and provides no additional benefit according to current ACIP guidelines 1
• Waiting too long between vaccines if following a sequential vaccination schedule can be avoided by following the CDC-recommended schedule 3
• Failing to consider specific risk factors and vaccination history when determining the appropriate pneumococcal vaccination strategy can be mitigated by consulting the ACIP guidelines 5