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Observational Study to Assess the Effectiveness of VLA1553 Vaccine in Preventing Chikungunya During a Pilot Vaccination Strategy in Brazil

NCT07347002 · Status: ENROLLING_BY_INVITATION · Type: OBSERVATIONAL · Enrollment: 1200

Last updated 2026-02-11

No results posted yet for this study

Summary

This is an observational, non-interventional, test-negative case-control (TNCC) study to estimate the vaccine effectiveness of VLA1553 against Chikungunya virus in a real-world setting.

Conditions

  • Chikungunya Virus Infection

Interventions

BIOLOGICAL

Live-attenuated CHIKV vaccine VLA1553

Non-interventional study: VLA1553 is used in the pilot vaccination strategy which is linked to this observational study.

Sponsors & Collaborators

  • Fundação Butantan

    collaborator UNKNOWN

  • Coalition for Epidemic Preparedness Innovations

    collaborator OTHER

  • Valneva Austria GmbH

    lead INDUSTRY

Eligibility

Min Age
18 Years
Max Age
59 Years
Sex
ALL
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2026-02-02
Primary Completion
2027-12-31
Completion
2027-12-31

Countries

  • Brazil

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT07347002 on ClinicalTrials.gov