Home / Ask The Experts / We inadvertently gave both pneumococcal conjugate (PCV) and pneumococcal polysaccharide (PPSV) vaccines to a high-risk adult patient at the same visit. We are looking for guidance.

Administering Vaccines
Vaccine Administration Errors

We inadvertently gave both pneumococcal conjugate (PCV) and pneumococcal polysaccharide (PPSV) vaccines to a high-risk adult patient at the same visit. We are looking for guidance.

Although PCV15 and PPSV23 should not be administered at the same visit, CDC does not recommend repeating either vaccine dose should this occur. You should inform the patient of the error and let them know that they will not need to repeat either dose.

Last reviewed: February 27, 2025

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This page was updated on February 27, 2025.