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A Phase 3a, observer-blind, randomized, controlled study to evaluate the safety of an investigational varicella vaccine compared with Varivax, administered as a first dose to healthy children 12 to 15 months of age.

Status
Recruiting
Phases
Phase 3
Study type
Interventional
Source
EU CTIS
Registry ID
CTIS2024-515868-31-00
Acronym
213997 (VNS 20-001)
Enrollment
336
Registered
2025-05-05
Start date
2025-06-10
Completion date
Unknown
Last updated
2025-12-09

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Varicella

Brief summary

Occurrence of solicited: •administration site events within 4 days (Day 1 to Day 4) post dose of VNS vaccine or VV administration. •systemic events within 15 days (Day 1 to Day 15) post-dose of study interventions administration. •systemic event (fever) within 22 days (Day 1 to Day 22) post-dose of study interventions administration. •administration site and systemic events (rash) within 43 days (Day 1 to Day 43) post-dose of study interventions administration., Occurrence of any unsolicited AEs within 43 days (Day 1 to Day 43) post-dose of study interventions administration., Occurrence of any medically attended AEs post-dose of study interventions administration up to study end (Day 181)., Occurrence of SAEs post-dose of study interventions administration up to study end.

Interventions

Sponsors

GlaxoSmithKline Biologicals
Lead SponsorINDUSTRY

Eligibility

Sex/Gender
All
Age
0 Years to 17 Years

Design outcomes

Primary

MeasureTime frame
Occurrence of solicited: •administration site events within 4 days (Day 1 to Day 4) post dose of VNS vaccine or VV administration. •systemic events within 15 days (Day 1 to Day 15) post-dose of study interventions administration. •systemic event (fever) within 22 days (Day 1 to Day 22) post-dose of study interventions administration. •administration site and systemic events (rash) within 43 days (Day 1 to Day 43) post-dose of study interventions administration., Occurrence of any unsolicited AEs within 43 days (Day 1 to Day 43) post-dose of study interventions administration., Occurrence of any medically attended AEs post-dose of study interventions administration up to study end (Day 181)., Occurrence of SAEs post-dose of study interventions administration up to study end.

Countries

Bulgaria, Denmark, Estonia, Lithuania, Poland

Outcome results

None listed

Source: EU CTIS · Data processed: Feb 4, 2026