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SARS-CoV-2 B.1.1.7 Decline Is Not Driven by the Introduction of a More Successful Variant.

Microbiology spectrum - 22 Dec 2021

Rodríguez-Grande Cristina, Buenestado-Serrano Sergio, Alcalá Luis, Sola-Campoy Pedro J, Molero-Salinas Andrea, Otero-Sobrino Álvaro, Rodríguez-Grande Jorge, de la Cueva García Víctor Manuel, Adán-Jiménez Javier, Rico-Luna Carla, Losada Carmen, Catalán Pilar, Muñoz Patricia, Pérez-Lago Laura, García de Viedma Darío

Abstract excerpt

The SARS-CoV-2 variant of concern (VOC) Delta (B.617.2 lineage) displaced the predominant VOC Alpha (B.1.1.7 lineage) in the United Kingdom. In Madrid, recent start of the decline of predominant VOC Alpha suggested an equivalent phenomenon. However, 11 different variants, none overrepresented in frequency, occupied progressively over a period of 7 weeks the niche previously dominated by VOC Alpha. Only after...

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PMID: 34787494
DOI: 10.1128/Spectrum.01128-21
PMCID: PMC8597630

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PubMed metadata and Literature Corpus relationships. Corpus snapshot updated 7 Sept 2026. Manifest publication-graph-cohort-2026-09-08.1.

Source receipt: pubmed, retrieved 7 Sept 2026.

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