A Study to Learn About the Safety of PREVENAR 20 Vaccine in Infants Aged Between Two to Six Months
← catalyst calendarNCT06622109 · readout in 118 d
Sponsored by Pfizer (industry) · PFE — their whole pipeline →.
Phase
—
Status
Active, not recruiting
Study type
Observational
Enrollment
1,100actual
Sites
1
Country
Japan
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 | 2024-11-25 | actual | When the study began enrolling |
| Primary completion | 2026-12-15 | estimated | The date the last participant is measured for the primary outcome — the readout window |
| Study completion | 2026-12-15 | estimated | The whole study's end, after follow-up |
| First posted | 2024-10-01 | actual | When this record first appeared on the registry |
| Results posted | — | When the sponsor posted results to the registry | |
| Record updated | 2026-03-12 | 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
Intervention
- Biological: 20-valent Pneumococcal Conjugate Vaccine
Primary outcomes
what the primary-completion date above is the date OFPercentage of Participants Reporting Adverse Reactions(ADRs)
measured From the first day of each vaccination (1st-4th) up to 28 days after each vaccination (1st-4th).
Percentage of Participants Reporting Serious Adverse Reactions (SADRs)
measured From the first day of 1st vaccination up to 28 days after 4th vaccination.
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