Emergence and expansion of highly infectious spike protein D614G mutant SARS-CoV-2 in central India
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Abstract
COVID-19 has emerged as global pandemic with largest damage to the public health, economy and human psyche.The genome sequence data obtained during the ongoing pandemic are valuable to understand the virus evolutionary patterns and spread across the globe. Increased availability of genome information of circulating SARS-CoV-2 strains in India will enable the scientific community to understand the emergence of new variants and their impact on human health. The first case of COVID-19 was detected in Chambal region of Madhya Pradesh state in mid of March 2020 followed by multiple introduction events and expansion of cases within next three months. More than 5000 COVID-19 suspected samples referred to Defence Research and Development Establishment, Gwalior, Madhya Pradesh were analyzed during the nation -wide lockdown and unlock period. A total of 136 cases were found positive over a span of three months that included virus introduction to the region and its further spread. Whole genome sequences employing Oxford nanopore technology were generated for 26 SARS-CoV-2 circulating in 10 different districts in Madhya Pradesh state of India. This period witnessed index cases with multiple travel histories responsible for introduction of COVID-19 followed by remarkable expansion of virus. The genome wide substitutions including in important viral proteins were identified. The detailed phylogenetic analysis revealed the circulating SARS-CoV-2 clustered in multiple clades including A2a, A4 and B. The cluster-wise segregation was observed, suggesting multiple introduction links and subsequent evolution of virus in the region. This is the first comprehensive whole genome sequence analysis from central India, which revealed the emergence and evolution of SARS-CoV-2 during thenation-wide lockdown and unlock.
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SciScore for 10.1101/2020.09.15.297846: (What is this?)
Please note, not all rigor criteria are appropriate for all manuscripts.
Table 1: Rigor
Institutional Review Board Statement not detected. Randomization not detected. Blinding not detected. Power Analysis not detected. Sex as a biological variable not detected. Table 2: Resources
Software and Algorithms Sentences Resources The Arctic pipeline uses processed reads to align against the available SARS CoV-2 reference genome. Arcticsuggested: (ARCTIC, RRID:SCR_005989)Further, variant calling and consensus sequence generation was done using Nanopolish. Nanopolishsuggested: (Nanopolish, RRID:SCR_016157)The good quality variants were used for annotation using snpEff tool. snpEffsuggested: (SnpEff, RRID:SCR_005191)Genome analysis of SARS-CoV-2: The nucleotide sequences of representative SARS-CoV-2 were … SciScore for 10.1101/2020.09.15.297846: (What is this?)
Please note, not all rigor criteria are appropriate for all manuscripts.
Table 1: Rigor
Institutional Review Board Statement not detected. Randomization not detected. Blinding not detected. Power Analysis not detected. Sex as a biological variable not detected. Table 2: Resources
Software and Algorithms Sentences Resources The Arctic pipeline uses processed reads to align against the available SARS CoV-2 reference genome. Arcticsuggested: (ARCTIC, RRID:SCR_005989)Further, variant calling and consensus sequence generation was done using Nanopolish. Nanopolishsuggested: (Nanopolish, RRID:SCR_016157)The good quality variants were used for annotation using snpEff tool. snpEffsuggested: (SnpEff, RRID:SCR_005191)Genome analysis of SARS-CoV-2: The nucleotide sequences of representative SARS-CoV-2 were retrieved from Global Initiative on Sharing All Influenza Data (GISAID) and NCBI GenBank, edited and analysed employing EditSeq and MegAlign modules of lasergene5 software package (DNASTAR Inc, USA). EditSeqsuggested: NoneMultiple sequence alignment was carried out using MUSCLE alignment method in Bioedit software module. MUSCLEsuggested: (MUSCLE, RRID:SCR_011812)Bioeditsuggested: (BioEdit, RRID:SCR_007361)Results from OddPub: We did not detect open data. We also did not detect open code. Researchers are encouraged to share open data when possible (see Nature blog).
Results from LimitationRecognizer: An explicit section about the limitations of the techniques employed in this study was not found. We encourage authors to address study limitations.Results from TrialIdentifier: No clinical trial numbers were referenced.
Results from Barzooka: We did not find any issues relating to the usage of bar graphs.
Results from JetFighter: We did not find any issues relating to colormaps.
Results from rtransparent:- Thank you for including a conflict of interest statement. Authors are encouraged to include this statement when submitting to a journal.
- Thank you for including a funding statement. Authors are encouraged to include this statement when submitting to a journal.
- No protocol registration statement was detected.
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