Nature Medicine, Published online: 06 February 2026; doi:10.1038/s41591-025-04197-2
In a phase 2 randomized, controlled, dose–response trial, the live-attenuated chikungunya vaccine (VLA1553) was given in full and half doses to children under the age of 12 in Honduras and the Dominican Republic and was found to be safe and immunogenic, with the results supporting selection of the full-dose VLA1553 in future clinical trials in this population.
