Status:
ENROLLING_BY_INVITATION
Assessment of Chikungunya Virus Seroprevalence Before VLA1553 Vaccination in the Municipalities Selected for Participation in the VLA1553 Pilot Vaccination Strategy in Brazil
Lead Sponsor:
Valneva Austria GmbH
Collaborating Sponsors:
Fundação Butantan
Coalition for Epidemic Preparedness Innovations
Conditions:
Chikungunya Virus Infection
Eligibility:
All Genders
2+ years
Brief 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.
Detailed Description
Households will be selected randomly using a multi-stage random sampling at the census tract, street, and household levels, to select study participants. The study aims to prospectively evaluate the a...
Eligibility Criteria
Inclusion
- Individuals residing in the selected municipalities of Brazil where the VLA1553 pilot vaccination strategy will be implemented.
- Individuals ≥2 years of age
- Individuals who sleep 3 nights a week or more in a household that is selected by cluster sampling.
Exclusion
- 1\. Individuals or their legally accepted representatives (LAR) who are not willing or not able to provide informed consent (and assent, as required) according to country-specific procedures.
Key Trial Info
Start Date :
September 22 2025
Trial Type :
OBSERVATIONAL
Allocation :
ESTIMATED
End Date :
December 31 2026
Estimated Enrollment :
4988 Patients enrolled
Trial Details
Trial ID
NCT07163845
Start Date
September 22 2025
End Date
December 31 2026
Last Update
September 25 2025
Active Locations (4)
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1
Universidade Federal Do Ceará
Fortaleza, Ceará, Brazil, 60430-160
2
Universidade Federal de Minas Gerais, CT Terapias Avançadas e Inovadoras
Belo Horizonte, Minas Gerais, Brazil, 31270-901
3
Centro de Pesquisas Clínicas Universidade Federal Sergipe, Hospital e Maternidade São João de Deus
Laranjeiras, Sergipe, Brazil, 49060-025
4
Fundação Faculdade Regional De Medicina De São José Do Rio Preto
São Pedro, São Paulo, Brazil, 15090-000