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OPA GMTs in participants who received PPSV23 1 to 5 years prior were diminished compared to participants who received Prevnar 13 at least 6 months prior and compared to participants who received Prevnar 13 followed by PPSV23 with the last PPSV23 dose at least 1 year prior.1
This randomized, open-label clinical trial described immune responses to Prevnar 20 in adults age 65 or older previously vaccinated with PPSV23, or Prevnar 13, or Prevnar 13 followed by PPSV23.1
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