The emergence of highly transmissible SARS-CoV-2 variants has led to surges in cases and the need for global genomic surveillance. While some variants rapidly spread worldwide, other variants only persist nationally. There is a need for more fine-scale analysis to understand transmission dynamics at a country scale. For instance, the Mu variant of interest, also known as lineage B.1.621, was first detected in Colombia and was responsible for a large local wave but only a few sporadic cases elsewhere.
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Jimenez-Silva, C., Rivero, R., Douglas, J., Bouckaert, R., Villabona-Arenas, C., Atkins, K., Gastelbondo, B., Calderon, A., Guzman, C., Echeverri-De la Hoz, D., Muñoz, M., Ballesteros, N., Castañeda, S., Patiño, L., Ramirez, A., Luna, N., Paniz-Mondolfi, A., Serrano-Coll, H., Ramirez, J., Mattar, S. & Drummond, A. 2023, 'Genomic epidemiology of SARS-CoV-2 variants during the first two years of the pandemic in Colombia', Communications Medicine, 3, article no: 97. https://doi.org/10.1038/s43856-023-00328-3