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| Pàgina inicial > Articles > Articles publicats > Deep Sequencing Reveals Dual Evolution of SARS-CoV-2 : |
| Data: | 2025 |
| Resum: | SARS-CoV-2 has evolved from early variants dominating the first (B. 1. 5, B. 1. 1) and second (B. 1. 177) pandemic waves, which exhibited a higher frequency of minority mutants with deletions leading to Defective Viral Genomes (DVGs) in the spike region near the S1/S2 cleavage site than the Alpha, Beta, and Delta variants. The emergence of Omicron has significantly altered the dominant variant profile, with Omicron subvariants now representing 100% of circulating viruses. To monitor the evolution and adaptation of Omicron in the human population, a deep-sequencing study was performed in RNA samples of BA. 1, BA. 1. 1, BA. 2, BA. 5, BQ. 1. 1, XBB. 1. 5 and BA. 2. 86 Omicron subvariants. The findings reveal two occurrences of similar evolutionary patterns within SARS-CoV-2 characterized by a shift from a significant to a very low production of DVGs. This event suggests that DVGs might play a role in the virus's spread and adaptation for persistence in infected humans. |
| Ajuts: | Ministerio de Economía y Competitividad IDI-20200297 Agencia Estatal de Investigación PID2021-126447OB-I00 Ministerio de Economía y Competitividad FISPI19/00301 Instituto de Salud Carlos III PI19/00533 Instituto de Salud Carlos III PI22/00258 Instituto de Salud Carlos III PI22/00023 Instituto de Salud Carlos III PI23/01065 Ministerio de Educación FPU21/04150 |
| Drets: | Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original. |
| Llengua: | Anglès |
| Document: | Article ; recerca ; Versió publicada |
| Matèria: | Deep-sequencing ; Dual evolution ; DVGs ; Omicron ; Quasispecies |
| Publicat a: | Journal of Medical Virology, Vol. 97 (june 2025) , ISSN 1096-9071 |
13 p, 1.4 MB |