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Tracking SARS-CoV-2 lineage B.1.1.7 dissemination: insights from nationwide spike gene target failure (SGTF) and spike gene late detection (SGTL) data, Portugal, week 49 2020 to week 3 2021.
Borges, Vítor; Sousa, Carlos; Menezes, Luís; Gonçalves, António Maia; Picão, Miguel; Almeida, José Pedro; Vieita, Margarida; Santos, Rafael; Silva, Ana Rita; Costa, Mariana; Carneiro, Luís; Casaca, Pedro; Pinto-Leite, Pedro; Peralta-Santos, André; Isidro, Joana; Duarte, Sílvia; Vieira, Luís; Guiomar, Raquel; Silva, Susana; Nunes, Baltazar; Gomes, João P.
  • Borges V; Bioinformatics Unit, Department of Infectious Diseases, National Institute of Health Dr. Ricardo Jorge (INSA), Lisbon, Portugal.
  • Sousa C; These authors contributed equally to this work.
  • Menezes L; These authors contributed equally to this work.
  • Gonçalves AM; Molecular Diagnostics Laboratory, Unilabs, Oporto, Portugal.
  • Picão M; Executive Office, Unilabs, Oporto, Portugal.
  • Almeida JP; Medical Office, Unilabs, Oporto, Portugal.
  • Vieita M; IT Office, Unilabs, Oporto, Portugal.
  • Santos R; Data Intelligence, Unilabs, Oporto, Portugal.
  • Silva AR; Data Intelligence, Unilabs, Oporto, Portugal.
  • Costa M; Data Intelligence, Unilabs, Oporto, Portugal.
  • Carneiro L; Molecular Diagnostics Laboratory, Unilabs, Oporto, Portugal.
  • Casaca P; Molecular Diagnostics Laboratory, Unilabs, Oporto, Portugal.
  • Pinto-Leite P; Molecular Diagnostics Laboratory, Unilabs, Oporto, Portugal.
  • Peralta-Santos A; Division of Epidemiology and Statistics, Directorate of Information and Analysis, Directorate-General of Health, Lisbon, Portugal.
  • Isidro J; Division of Epidemiology and Statistics, Directorate of Information and Analysis, Directorate-General of Health, Lisbon, Portugal.
  • Duarte S; Division of Epidemiology and Statistics, Directorate of Information and Analysis, Directorate-General of Health, Lisbon, Portugal.
  • Vieira L; Bioinformatics Unit, Department of Infectious Diseases, National Institute of Health Dr. Ricardo Jorge (INSA), Lisbon, Portugal.
  • Guiomar R; Innovation and Technology Unit, Department of Human Genetics; National Institute of Health Dr. Ricardo Jorge (INSA), Lisbon, Portugal.
  • Silva S; Innovation and Technology Unit, Department of Human Genetics; National Institute of Health Dr. Ricardo Jorge (INSA), Lisbon, Portugal.
  • Nunes B; National Reference Laboratory for Influenza and other Respiratory Viruses, Department of Infectious Diseases; National Institute of Health Dr. Ricardo Jorge (INSA), Lisbon, Portugal.
  • Gomes JP; Epidemiological Research Unit Department of Epidemiology, National Institute of Health Dr. Ricardo Jorge (INSA), Lisbon, Portugal.
Euro Surveill ; 26(10)2021 03.
Article in English | MEDLINE | ID: covidwho-1136424
ABSTRACT
We show that the SARS-CoV-2 B.1.1.7 lineage is highly disseminated in Portugal, with the odds of B.1.1.7 proportion increasing at an estimated 89% (95% confidence interval 83-95%) per week until week 3 2021. RT-PCR spike gene target late detection (SGTL) can constitute a useful surrogate to track B.1.1.7 spread, besides the spike gene target failure (SGTF) proxy. SGTL/SGTF samples were associated with statistically significant higher viral loads, but not with substantial shift in age distribution compared to non-SGTF/SGTL cases.
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Full text: Available Collection: International databases Database: MEDLINE Main subject: SARS-CoV-2 / COVID-19 Type of study: Observational study / Prognostic study Limits: Humans Country/Region as subject: Europa Language: English Journal subject: Communicable Diseases Year: 2021 Document Type: Article Affiliation country: 1560-7917.Es.2021.26.10.2100130

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Full text: Available Collection: International databases Database: MEDLINE Main subject: SARS-CoV-2 / COVID-19 Type of study: Observational study / Prognostic study Limits: Humans Country/Region as subject: Europa Language: English Journal subject: Communicable Diseases Year: 2021 Document Type: Article Affiliation country: 1560-7917.Es.2021.26.10.2100130