Chikungunya vaccine trial for kids pulled before start

NCT ID NCT07133178

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study was designed to test a vaccine called VLA1553 to protect healthy children aged 1 to 11 years from chikungunya, a virus spread by mosquitoes. The plan was to give the vaccine or a comparison shot to over 3,000 children and check for immune responses and safety. However, the trial was withdrawn before any participants were enrolled.

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