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10.2147/IDR.S277620 http://scihub22266oqcxt.onion/10.2147/IDR.S277620 33149633!7605616!33149633     free     free     free Deprecated: Implicit conversion from float 219.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534       Infect+Drug+Resist 2020 ; 13 (ä): 3887-3894 Nephropedia Template TP {{tp|p=33149633|t=2020. Exploring Diversity of COVID?19 Based on Substitution Distance |pdf=|usr=}}{{33149633}} gab.com Text Exploring Diversity of COVID 19 Based on Substitution Distance JO: Infect Drug Resist http://www.kidney.de/pget.php?&tw=1&pmid=33149633 #FOAvip BACKGROUND: The number of COVID-19 infections worldwide has reached 10 million. COVID?19 caused by SARS-CoV-2 is more contagious than SARS-CoV-1. There is a dispute about the origin of COVID-19. Study results showed that all SARS-CoV-2 sequences around the world share a common ancestor towards the end of 2019. METHODS: Virus sequences from COVID-19 samples at the early time should be less diversifiable than those from samples at the later time because there might be more mutations when the virus evolutes over time. The diversity of virus nucleotide sequences can be measured by the nucleotide substitution distance. To explore the diversity of SARS-CoV-2, we use different nucleotide substitution models to calculate the distances of SARS-CoV-2 samples from 3 different areas, China, Europe, and the USA. Then, we use these distances to infer the origin of COVID-19. RESULTS: It is known that COVID-19 originated in Wuhan China and then spread to Europe and the USA. By using different substitution models, the distances of SARS-CoV-2 samples from these areas are significantly different. By ANOVA testing, the p-value is less than 2.2e-16. The analyzed results in most substitution models show that China has the lowest diversity, followed by Europe and lastly by the USA. This outcome coincides with the virus transmission time order that SARS-CoV-2 starts in China, then outbreaks in Europe and finally in the USA. CONCLUSION: The magnitude of nucleotide substitution distance of SARS-CoV-2 is closely related to the transmission time order of SARS-CoV-2. This outcome reveals that the nucleotide substitution distance of SARS-CoV-2 may be used to infer the origin of COVID-19. Twit Text FOAVip Exploring Diversity of COVID 19 Based on Substitution Distance ????Infect Drug Resist http://www.kidney.de/pget.php?&tw=1&pmid=33149633 #FOAvip Twit Text # Free Paper on # # # # # LINK http://www.kidney.de/pget.php?&tw=1&pmid=33149633 #FOAvip English Wikipedia <ref>{{Cite pmid|33149633}}</ref> Exploring Diversity of COVID?19 Based on Substitution Distance #MMPMID33149633 Chen YH; Wang H Infect Drug Resist 2020[]; 13 (ä): 3887-3894 PMID33149633show ga BACKGROUND: The number of COVID-19 infections worldwide has reached 10 million. COVID?19 caused by SARS-CoV-2 is more contagious than SARS-CoV-1. There is a dispute about the origin of COVID-19. Study results showed that all SARS-CoV-2 sequences around the world share a common ancestor towards the end of 2019. METHODS: Virus sequences from COVID-19 samples at the early time should be less diversifiable than those from samples at the later time because there might be more mutations when the virus evolutes over time. The diversity of virus nucleotide sequences can be measured by the nucleotide substitution distance. To explore the diversity of SARS-CoV-2, we use different nucleotide substitution models to calculate the distances of SARS-CoV-2 samples from 3 different areas, China, Europe, and the USA. Then, we use these distances to infer the origin of COVID-19. RESULTS: It is known that COVID-19 originated in Wuhan China and then spread to Europe and the USA. By using different substitution models, the distances of SARS-CoV-2 samples from these areas are significantly different. By ANOVA testing, the p-value is less than 2.2e-16. The analyzed results in most substitution models show that China has the lowest diversity, followed by Europe and lastly by the USA. This outcome coincides with the virus transmission time order that SARS-CoV-2 starts in China, then outbreaks in Europe and finally in the USA. CONCLUSION: The magnitude of nucleotide substitution distance of SARS-CoV-2 is closely related to the transmission time order of SARS-CoV-2. This outcome reveals that the nucleotide substitution distance of SARS-CoV-2 may be used to infer the origin of COVID-19. äExploring Diversity of COVID?19 Based on Substitution Distance (epmc).pdf DeepDyve Pubget Overpricing