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- W2138077133 abstract "<h3>ABSTRACT</h3> The ongoing SARSCoV-2 pandemic was introduced into Africa on 14<sup>th</sup> February 2020 and has rapidly spread across the continent causing severe public health crisis and mortality. We investigated the genetic diversity and evolution of this virus during the early outbreak months using whole genome sequences. We performed; recombination analysis against closely related CoV, Bayesian time scaled phylogeny and investigated spike protein amino acid mutations. Results from our analysis showed recombination signals between the AfrSARSCoV-2 sequences and reference sequences within the N and S genes. The evolutionary rate of the AfrSARSCoV-2 was 4.133 × 10<sup>−4</sup> high posterior density HPD (4.132 × 10<sup>−4</sup> to 4.134 × 10<sup>−4</sup>) substitutions/site/year. The time to most recent common ancestor TMRCA of the African strains was December 7<sup>th</sup> 2019. The AfrSARCoV-2 sequences diversified into two lineages A and B with B being more diverse with multiple sub-lineages confirmed by both maximum clade credibility MCC tree and PANGOLIN software. There was a high prevalence of the D614-G spike protein amino acid mutation (82.61%) among the African strains. Our study has revealed a rapidly diversifying viral population with the G614 spike protein variant dominating, we advocate for up scaling NGS sequencing platforms across Africa to enhance surveillance and aid control effort of SARSCoV-2 in Africa." @default.
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- W2138077133 title "Portal hypertension resulting from splenic arteriovenous fistulae." @default.
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- W2138077133 doi "https://doi.org/10.1136/gut.6.5.500" @default.
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