A Study to Learn About How Safe and Effective is 20vPnC and 13vPnC Vaccines in Chinese Adults
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Phase
Phase 1
Status
Completed
Study type
Interventional
Design
Randomized · Double · Prevention
Enrollment
400actual
Sites
3
Country
China
Every value on this page is a field the sponsor filed with ClinicalTrials.gov, reproduced. Dates are their own estimates, revised as a study runs, unless the registry marks them actual. sources →
Source: ClinicalTrials.gov, retrieved 2026-08-19
Dates
each axis at the precision it was filed, with the registry's own basis| Date | Filed | Basis | What it is |
|---|---|---|---|
| Start | 2025-07-06 | actual | When the study began enrolling |
| Primary completion | 2026-01-28 | actual | The date the last participant is measured for the primary outcome — the readout window |
| Study completion | 2026-01-28 | actual | The whole study's end, after follow-up |
| First posted | 2025-06-13 | actual | When this record first appeared on the registry |
| Results posted | — | When the sponsor posted results to the registry | |
| Record updated | 2026-02-25 | actual | The sponsor's own last edit to this record — every projection above is as current as this date |
What it studies
Condition
- Pneumococcal Disease
Interventions
- Biological: 20vPnC
- Biological: 13vPnC
Primary outcomes
what the primary-completion date above is the date OFPercentage of participants reporting prompted local reactions within 7 days following investigational product administration
measured Within 7 days after vaccination
Percentage of participants reporting prompted systemic events within 7 days following investigational product administration
measured Within 7 days after vaccination
Percentage of participants reporting adverse events (AEs) through 1 month following investigational product administration
measured Within 1 month after vaccination
Percentage of participants reporting serious adverse events (SAEs) throughout the study
measured Within 6 months after vaccination
Percentage of participants reporting abnormal hematology, biochemistry, and urinalysis and microscopy laboratory values
measured 3 to 5 days after vaccination
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