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Expansion of a SARS-CoV-2 Delta variant with an 872 nt deletion encompassing ORF7a, ORF7b and ORF8, Poland, July to August 2021
- Natalia Mazur-Panasiuk1,* , Lukasz Rabalski2,* , Tomasz Gromowski1,3 , Grzegorz Nowicki4 , Michal Kowalski5 , Witold Wydmanski5 , Piotr Szulc5 , Maciej Kosinski2 , Karolina Gackowska2 , Natalia Drweska-Matelska4 , Jakub Grabowski4 , Anna Piotrowska-Mietelska6 , Boguslaw Szewczyk2 , Krystyna Bienkowska-Szewczyk7 , Jakub Swadzba6 , Pawel Labaj5 , Maciej Grzybek8 , Krzysztof Pyrc1
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View Affiliations Hide AffiliationsAffiliations: 1 Virogenetics Laboratory of Virology, Malopolska Centre of Biotechnology, Jagiellonian University, Krakow, Poland 2 Laboratory of Recombinant Vaccines, Intercollegiate Faculty of Biotechnology of University of Gdansk and Medical University of Gdansk, Gdansk, Poland 3 Human Genome Research Variation Group, Malopolska Centre of Biotechnology, Jagiellonian University, Krakow, Poland 4 genXone SA, Research & Development Laboratory, Suchy Las, Poland 5 Bioinformatics Research Group, Malopolska Centre of Biotechnology, Jagiellonian University, Krakow, Poland 6 Diagnostyka Medical Laboratories, Krakow, Poland 7 Laboratory of Virus Molecular Biology, Intercollegiate Faculty of Biotechnology of University of Gdansk and Medical University of Gdansk, Gdansk, Poland 8 Department of Tropical Parasitology, Institute of Maritime and Tropical Medicine, Medical University of Gdansk, Gdynia, Poland* These authors contributed equally to this article and share first authorshipCorrespondence:Krzysztof Pyrck.a.pyrc uj.edu.pl
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Citation style for this article: Mazur-Panasiuk Natalia, Rabalski Lukasz, Gromowski Tomasz, Nowicki Grzegorz, Kowalski Michal, Wydmanski Witold, Szulc Piotr, Kosinski Maciej, Gackowska Karolina, Drweska-Matelska Natalia, Grabowski Jakub, Piotrowska-Mietelska Anna, Szewczyk Boguslaw, Bienkowska-Szewczyk Krystyna, Swadzba Jakub, Labaj Pawel, Grzybek Maciej, Pyrc Krzysztof. Expansion of a SARS-CoV-2 Delta variant with an 872 nt deletion encompassing ORF7a, ORF7b and ORF8, Poland, July to August 2021. Euro Surveill. 2021;26(39):pii=2100902. https://doi.org/10.2807/1560-7917.ES.2021.26.39.2100902 Received: 16 Sept 2021; Accepted: 30 Sept 2021
Abstract
Routine genomic surveillance on samples from COVID-19 patients collected in Poland during summer 2021 revealed the emergence of a SARS-CoV-2 Delta variant with a large 872 nt deletion. This change, confirmed by Sanger and deep sequencing, causes complete loss of ORF7a, ORF7b, and ORF8 genes. The index case carrying the deletion is unknown. The standard pipeline for sequencing may mask this deletion with a long stretch of N’s. Effects of this deletion on phenotype or immune evasion needs further study.
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