Dengue cases rose to record levels during 2023-2024. We investigated dengue in Valle del Cauca, Colombia, to determine if specific virus serotypes or lineages caused its large outbreak. We detected all 4 serotypes and multiple lineages, suggesting that factors such as climatic conditions were likely responsible for increased dengue in Colombia.
Keywords: Colombia; Dengue; lineages; mosquitoborne diseases; outbreak; phylogenetics; sequencing; serotypes; vector-borne infections; viruses.