Whole-Genome Sequencing of Measles Virus from 2025 Outbreak, Texas, USA

We sequenced measles-positive samples from the 2025 outbreak in Texas, USA, and identified the expansion of a closely related genotype D8 lineage within broader strain diversity from North America. F:H419R was used as a lineage-associated genomic surveillance marker. Our findings demonstrate that whole-genome sequencing can strengthen measles surveillance and enhance outbreak investigations.