Omicron Sublineages Current Status in Ecuador

Andrés Carrazco-Montalvo; Andrés Herrera-Yela; Damaris Alarcón-Vallejo; Diana Gutiérrez-Pallo; Isaac Armendáriz-Castillo; Derly Andrade-Molina; Karen Muñoz-Mawyin; Juan Carlos Fernández-Cadena; Gabriel Morey-León; Paúl Cárdenas; Rubén Armas-Gonzalez; Leandro Patiño

doi:10.20944/preprints202204.0196.v1

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preprints.org > biology and life sciences > biochemistry and molecular biology > doi: 10.20944/preprints202204.0196.v1

Preprint Communication Version 1 Preserved in Portico This version is not peer-reviewed

Omicron Sublineages Current Status in Ecuador

Andrés Carrazco-Montalvo

^* ,

Andrés Herrera-Yela

Damaris Alarcón-Vallejo

Diana Gutiérrez-Pallo

Isaac Armendáriz-Castillo

Derly Andrade-Molina

Karen Muñoz-Mawyin

Juan Carlos Fernández-Cadena

Version 1 : Received: 19 April 2022 / Approved: 21 April 2022 / Online: 21 April 2022 (08:24:19 CEST)

A peer-reviewed article of this Preprint also exists.

Carrazco-Montalvo, A.; Herrera-Yela, A.; Alarcón-Vallejo, D.; Gutiérrez-Pallo, D.; Armendáriz-Castillo, I.; Andrade-Molina, D.; Muñoz-Mawyin, K.; Fernández-Cadena, J.C.; Morey-León, G.; USFQ-COVID-19 Consortium; CRN Influenza y OVR—INSPI; Patiño, L. Omicron Sub-Lineages (BA.1.1.529 + BA.*) Current Status in Ecuador. Viruses 2022, 14, 1177. Carrazco-Montalvo, A.; Herrera-Yela, A.; Alarcón-Vallejo, D.; Gutiérrez-Pallo, D.; Armendáriz-Castillo, I.; Andrade-Molina, D.; Muñoz-Mawyin, K.; Fernández-Cadena, J.C.; Morey-León, G.; USFQ-COVID-19 Consortium; CRN Influenza y OVR—INSPI; Patiño, L. Omicron Sub-Lineages (BA.1.1.529 + BA.*) Current Status in Ecuador. Viruses 2022, 14, 1177.

Abstract

The Omicron variant of SARS-CoV-2 is the latest pandemic lineage causing COVID-19. Despite having a vaccination rate ≥ 85% Ecuador recorded a high incidence of Omicron from December 2021 to March 2022. Since Omicron emerged it is evolving into multiple sublineages with distinct prevalence in different regions. In this work, we use all Omicron sequences from Ecuador available at GISAID until March 2022 and the software Nextclade and Pangolin to identify which lineages circulate in this country. We detected 12 different sublineages (BA.1, BA.1.1, BA.1.1.1, BA.1.1.14, BA.1.1.2, BA.1.14, BA.1.15, BA.1.16, BA.1.17, BA.1.6, BA.2, BA.2.3), which has been reported in Africa, America, Europe, and Asia suggesting multiple introduction events. Sublineages BA.1.1 and BA.1 were the most prevalent. Genomic surveillance must continue to evaluate the dynamic of current sublineages, early introduction of new ones and vaccine efficacy against evolving SARS-CoV-2.

Keywords

COVID-19; Omicron; Sublineages; Ecuador

Subject

Biology and Life Sciences, Biochemistry and Molecular Biology

Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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