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[Progress in source tracking of SARS-CoV-2].
He, Wenqiao; Chen, Qing.
  • He W; Department of Epidemiology, School of Public Health, Guangdong Provincial Key Laboratory of Tropical Disease Research, Southern Medical University, Guangzhou 510515, China.
  • Chen Q; Department of Epidemiology, School of Public Health, Guangdong Provincial Key Laboratory of Tropical Disease Research, Southern Medical University, Guangzhou 510515, China.
Nan Fang Yi Ke Da Xue Xue Bao ; 40(12): 1838-1842, 2020 Dec 30.
Article in Chinese | MEDLINE | ID: covidwho-1389811
ABSTRACT
Coronavirus disease 2019 (COVID-19) pandemic has caused a total of 55 928 327 confirmed cases and 1 344 003 deaths as of November 19, 2020. But so far the origin of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) that causes this pandemic has remained undetermined. The purpose of this study is to review the current research of SARS-CoV-2 and the existing problems therein, which may provide inspiration for further researches. Existing evidence suggested that SARS-CoV-2 may be derived from bat coronavirus 40-70 years ago. During the evolution, this virus underwent extensive variations in the process of mutations and natural selection. Different genomic regions of SARS-CoV-2 may have different selection pressures, but all of which increase the difficulty of tracing the origin of this virus. A wide variety of animals have been considered as potential hosts of SARS-CoV-2, including cats, lions, tigers, dogs and minks. SARS-CoV-2 has a chance to transmit from humans to animals and can be transmitted among animals. Current research evidence has shown that China is not the original source of SARS-CoV-2. It is still unclear how the virus spreads to human, and efforts are still need to be made to explore the origin of SARS-CoV-2, its hosts and intermediate hosts, and the mechanism of its transmission across different species of animals.
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Full text: Available Collection: International databases Database: MEDLINE Main subject: Chiroptera / SARS-CoV-2 / COVID-19 Limits: Animals / Humans Country/Region as subject: Asia Language: Chinese Journal: Nan Fang Yi Ke Da Xue Xue Bao Year: 2020 Document Type: Article Affiliation country: J.ISSN.1673-4254.2020.12.22

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Full text: Available Collection: International databases Database: MEDLINE Main subject: Chiroptera / SARS-CoV-2 / COVID-19 Limits: Animals / Humans Country/Region as subject: Asia Language: Chinese Journal: Nan Fang Yi Ke Da Xue Xue Bao Year: 2020 Document Type: Article Affiliation country: J.ISSN.1673-4254.2020.12.22