Brazil Pre-Vaccination survey gauges chikungunya immunity

NCT ID NCT07163845

Ongoing Knowledge-focused Sponsor: Valneva Austria GmbH Source: ClinicalTrials.gov ↗

First seen Jun 26, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study will test over 5,300 people in about 10 Brazilian municipalities for antibodies to the chikungunya virus before a pilot vaccination campaign with the VLA1553 vaccine. The goal is to see how many people have already been exposed to the virus and how that might affect vaccine uptake. Participants are healthy individuals aged 2 and older living in selected areas.

What this could mean

Our plain-language read of the trial. This is informational only — not medical advice or a prediction.

What this could lead to: If successful, this study could help public health officials better plan vaccination campaigns against chikungunya in Brazil.
What could go wrong: This is an observational study, not a treatment trial. It only measures existing immunity and does not test the vaccine itself.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Get updates

Get notified about this study

Sign up to get updates when this study changes or when new studies for CHIKUNGUNYA VIRUS INFECTION are added.

Our safety recommendation!

By submitting, you agree to our Terms of use

Conditions

The condition(s) this trial relates to.

chikungunya

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

CHIKUNGUNYA VIRUS INFECTION

Contacts and locations

Locations

Centro de Pesquisas Clínicas Universidade Federal Sergipe, Hospital e Maternidade São João de Deus

Laranjeiras, Sergipe, 49060-025, Brazil
Fundação Faculdade Regional De Medicina De São José Do Rio Preto

São Pedro, São Paulo, 15090-000, Brazil
Universidade Federal Do Ceará

Fortaleza, Ceará, 60430-160, Brazil
Universidade Federal de Minas Gerais, CT Terapias Avançadas e Inovadoras

Belo Horizonte, Minas Gerais, 31270-901, Brazil

More trials for these conditions

Other studies related to the condition(s) this trial covers.