Genetic Analysis of SARS-CoV-2 Variants in Mexico during the First Year of the COVID-19 Pandemic

Blanca Taboada; Selene Zárate; Pavel Iša; Celia Boukadida; Joel Armando Vazquez-Perez; José Esteban Muñoz-Medina; José Ernesto Ramírez-González; Andreu Comas-García; Concepción Grajales-Muñiz; Alma Rincón-Rubio; Margarita Matías-Florentino; Alejandro Sanchez-Flores; Edgar Mendieta-Condado; Jerome Verleyen; Gisela Barrera-Badillo; Lucía Hernández-Rivas; Fidencio Mejía-Nepomuceno; José Arturo Martínez-Orozco; Eduardo Becerril-Vargas; Susana López; Irma López-Martínez; Santiago Ávila-Ríos; Carlos F. Arias

Genetic Analysis of SARS-CoV-2 Variants in Mexico during the First Year of the COVID-19 Pandemic

During the first year of the SARS-CoV-2 pandemic in Mexico, more than two million people were infected. In this study, we analyzed full genome sequences from 27 February 2020 to 28 February 2021 to characterize the geographical and temporal distribution of SARS-CoV-2 lineages and identify the most common circulating lineages during this period. We defined six different geographical regions with particular dynamics of lineage circulation. The Northeast and Northwest regions were the ones that exhibited the highest lineage diversity, while the Central south and South/Southeast regions presented less diversity with predominance of a certain lineage. Additionally, by late February 2021, lineage B.1.1.519 represented more than 89% of all circulating lineages in the country.

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