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10.1002/gepi.22373

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suck abstract from ncbi


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pmid33415739      Genet+Epidemiol 2021 ; 45 (3): 316-323
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  • Unsupervised cluster analysis of SARS-CoV-2 genomes reflects its geographic progression and identifies distinct genetic subgroups of SARS-CoV-2 virus #MMPMID33415739
  • Hahn G; Lee S; Weiss ST; Lange C
  • Genet Epidemiol 2021[Apr]; 45 (3): 316-323 PMID33415739show ga
  • Over 10,000 viral genome sequences of the SARS-CoV-2virus have been made readily available during the ongoing coronavirus pandemic since the initial genome sequence of the virus was released on the open access Virological website (http://virological.org/) early on January 11. We utilize the published data on the single stranded RNAs of 11,132 SARS-CoV-2 patients in the GISAID database, which contains fully or partially sequenced SARS-CoV-2 samples from laboratories around the world. Among many important research questions which are currently being investigated, one aspect pertains to the genetic characterization/classification of the virus. We analyze data on the nucleotide sequencing of the virus and geographic information of a subset of 7640 SARS-CoV-2 patients without missing entries that are available in the GISAID database. Instead of modeling the mutation rate, applying phylogenetic tree approaches, and so forth, we here utilize a model-free clustering approach that compares the viruses at a genome-wide level. We apply principal component analysis to a similarity matrix that compares all pairs of these SARS-CoV-2 nucleotide sequences at all loci simultaneously, using the Jaccard index. Our analysis results of the SARS-CoV-2 genome data illustrates the geographic and chronological progression of the virus, starting from the first cases that were observed in China to the current wave of cases in Europe and North America. This is in line with a phylogenetic analysis which we use to contrast our results. We also observe that, based on their sequence data, the SARS-CoV-2 viruses cluster in distinct genetic subgroups. It is the subject of ongoing research to examine whether the genetic subgroup could be related to diseases outcome and its potential implications for vaccine development.
  • |*Cluster Analysis[MESH]
  • |*Geographic Mapping[MESH]
  • |COVID-19/epidemiology/*virology[MESH]
  • |China/epidemiology[MESH]
  • |Databases, Genetic[MESH]
  • |Europe/epidemiology[MESH]
  • |Genome, Viral/*genetics[MESH]
  • |Humans[MESH]
  • |Molecular Epidemiology[MESH]
  • |North America/epidemiology[MESH]
  • |Pandemics[MESH]
  • |Phylogeny[MESH]
  • |Principal Component Analysis[MESH]
  • |Prognosis[MESH]
  • |SARS-CoV-2/*classification/*genetics/isolation & purification/pathogenicity[MESH]


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  • suck abstract from ncbi

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