ArticleViruses2023
Omicron Waves in Argentina: Dynamics of SARS-CoV-2 Lineages BA.1, BA.2 and the Emerging BA.2.12.1 and BA.4/BA.5.
Article in Viruses, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.
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Who cites it
11 citing papers in PubMed.
- Genomic surveillance of SARS-CoV-2: a resource-efficient wastewater-based workflow.Molecular biology reports · 2026Article
- Genome characterization of the SARS-CoV-2 omicron in Cameroon.BMC infectious diseases · 2026Article
- Article
- Parametric analysis of the transmission dynamics during indigenous aggregated outbreaks caused by five SARS-CoV-2 strains in Nanjing, China.Frontiers in public health · 2024Article
- SARS-CoV-2 Omicron variants BA.4 and BA.5 dominated the fifth COVID-19 epidemiological wave in Mexico.Microbial genomics · 2023Article
- SARS-CoV-2 Variants of Concern and Clinical Severity in the Mexican Pediatric Population.Infectious disease reports · 2023Article
- The Lambda Variant in Argentina: Analyzing the Evolution and Spread of SARS-CoV-2 Lineage C.37.Viruses · 2023Article
- The Omicron Lineages BA.1 and BA.2 (Viruses · 2023Article
- Ready for new waves: optimizing SARS-CoV-2 variants monitoring in pooled samples with droplet digital PCR.Frontiers in public health · 2023Article
- Viable SARS-CoV-2 Omicron sub-variants isolated from autopsy tissues.Frontiers in microbiology · 2023Article
- Article
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Authors and funding
48 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The COVID-19 pandemic has lately been driven by Omicron. This work aimed to study the dynamics of SARS-CoV-2 Omicron lineages during the third and fourth waves of COVID-19 in Argentina. Molecular surveillance was performed on 3431 samples from Argentina, between EW44/2021 and EW31/2022. Sequencing, phylogenetic and phylodynamic analyses were performed. A differential dynamic between the Omicron waves was found. The third wave was associated with lineage BA.1, characterized by a high number of cases, very fast displacement of Delta, doubling times of 3.3 days and a low level of lineage diversity and clustering. In contrast, the fourth wave was longer but associated with a lower number of cases, initially caused by BA.2, and later by BA.4/BA.5, with doubling times of about 10 days. Several BA.2 and BA.4/BA.5 sublineages and introductions were detected, although very few clusters with a constrained geographical distribution were observed, suggesting limited transmission chains. The differential dynamic could be due to waning immunity and an increase in population gatherings in the BA.1 wave, and a boosted population (for vaccination or recent prior immunity for BA.1 infection) in the wave caused by BA2/BA.4/BA.5, which may have limited the establishment of the new lineages.
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