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Assessment of Chikungunya Virus Seroprevalence Before VLA1553 Vaccination in the Municipalities Selected for Participation in the VLA1553 Pilot Vaccination Strategy in Brazil
Sponsor: Valneva Austria GmbH
Summary
This is a cross-sectional serosurvey using household cluster sampling conducted before the VLA1553 pilot vaccination strategy will be implemented in about 10 municipalities in Brazil.
Key Details
Gender
All
Age Range
2 Years - Any
Study Type
OBSERVATIONAL
Enrollment
5354
Start Date
2025-09-22
Completion Date
2026-12-31
Last Updated
2026-02-11
Healthy Volunteers
Yes
Conditions
Interventions
Live-attenuated CHIKV vaccine VLA1553
Non-interventional study: VLA1553 is used in the pilot vaccination strategy which is carried out after this observational study.
Locations (4)
Universidade Federal Do Ceará
Fortaleza, Ceará, Brazil
Universidade Federal de Minas Gerais, CT Terapias Avançadas e Inovadoras
Belo Horizonte, Minas Gerais, Brazil
Centro de Pesquisas Clínicas Universidade Federal Sergipe, Hospital e Maternidade São João de Deus
Laranjeiras, Sergipe, Brazil
Fundação Faculdade Regional De Medicina De São José Do Rio Preto
São Pedro, São Paulo, Brazil