Related Experiment Video
Updated: Dec 23, 2025

Live Imaging and Quantification of Viral Infection in K18 hACE2 Transgenic Mice Using Reporter-Expressing Recombinant SARS-CoV-2
Published on: November 5, 2021
Zoonotic origins of human coronavirus 2019 (HCoV-19 / SARS-CoV-2): why is this work important?
Gary Wong1,2, Yu-Hai Bi3, Qi-Hui Wang3
1CAS Key Laboratory of Molecular Virology & Immunology, Institut Pasteur of Shanghai, Chinese Academy of Sciences, Shanghai 200031, China.
Insights
Investigating the zoonotic origins of COVID-19 (caused by SARS-CoV-2) is crucial for pandemic control. Understanding HCoV-19
Area of Science:
- Virology
- Epidemiology
- Public Health
Background:
- The COVID-19 pandemic, caused by SARS-CoV-2, poses a significant global health threat.
- Previous coronavirus epidemics, SARS-CoV and MERS-CoV, also caused severe respiratory illness.
- Understanding the zoonotic origins of novel viruses is critical for preventing future outbreaks.
Discussion:
- This work reviews current data on the zoonotic origins of HCoV-19 (SARS-CoV-2).
- It draws parallels with the origins and impacts of SARS-CoV and MERS-CoV.
- The importance of continued research into HCoV-19 origins is emphasized.
Key Insights:
- SARS-CoV-2, the virus responsible for COVID-19, likely has zoonotic origins.
- Comparative analysis with SARS-CoV and MERS-CoV highlights the potential for severe human disease from novel coronaviruses.
- Tracing the precise origins of HCoV-19 is a key scientific challenge.
Outlook:
- Future research should prioritize intensified efforts to trace the origins of HCoV-19.
- Such investigations are vital for developing effective control and prevention strategies for the ongoing pandemic.
- Continued global collaboration in virological and epidemiological research is essential.
Abstract:
The ongoing pandemic of coronavirus disease 2019 (COVID-19), caused by infection with human coronavirus 2019 (HCoV-19 / SARS-CoV-2 / 2019-nCoV), is a global threat to the human population. Here, we briefly summarize the available data for the zoonotic origins of HCoV-19, with reference to the other two epidemics of highly virulent coronaviruses, SARS-CoV and MERS-CoV, which cause severe pneumonia in humans. We propose to intensify future efforts for tracing the origins of HCoV-19, which is a very important scientific question for the control and prevention of the pandemic.
More Related Videos
Related Concept Videos
Single Nucleotide Polymorphisms-SNPs
Viral Recombination
Viral Mutations
Conjugated Proteins
Nucleoproteins are protein complexes that contain nucleic acids, categorized as deoxyribonucleoproteins (DNPs) or ribonucleoproteins (RNPs) respectively. The nucleosome is a typical example of a DNP where nuclear DNA is associated with histone proteins. The major antigen for the Covid-19 virus SARS-CoV is an RNP that is critical...
Rous Sarcoma Virus (RSV) and Cancer
RSV is a retrovirus that contains two copies of a plus-strand RNA genome. Its genome consists of four main open...
Retroviruses

