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3. www.ncbi.nlm.nih.gov › pmc › articlesZoonotic origins of human coronaviruses - PMC

   www.ncbi.nlm.nih.gov › pmc › articles

   Mar 15, 2020 · The study of CoVs in bats and other animals has drastically changed our perception of the importance of zoonotic origins and animal reservoirs of HCoVs in human transmission. Pervasive evidence has shown that SARS-CoV, MERS-CoV and SARS-CoV-2 have a bat origin and are transmitted to humans via intermediate hosts.

   • Figure 1

     Animal hosts of HCoVs. Blue, green, purple, red, orange,...

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     Clinical symptoms: Malaise Headache Nasal discharge Sneezing...

4. www.ncbi.nlm.nih.gov › pmc › articlesCOVID-19 infection: Origin, transmission, and characteristics ...

   www.ncbi.nlm.nih.gov › pmc › articles

   Mar 16, 2020 · The signs and symptoms of SARS-CoV-2 induced COVID-19 are a bit similar to influenza and seasonal allergies (pollen allergies). Person suffering from influenza or seasonal allergy may also exhibit temprature which can be detected by thermo-scanners, hence the person will become suspected.

   • Author: Muhammad Adnan Shereen, Muhammad Adnan Shereen, Suliman Khan, Abeer Kazmi, Nadia Bashir, Rabeea Sidd...
   • DOI: 10.1016/j.jare.2020.03.005

   • Publish Year: 2020
   • Publication: J Adv Res. 2020 Jul; 24: 91-98.

5. en.wikipedia.org › wiki › Zoonotic_origins_of_COVID-19Zoonotic origins of COVID-19 - Wikipedia

   en.wikipedia.org › wiki › Zoonotic_origins_of_COVID-19

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   SARS-CoV-2, the causative agent of COVID-19, was first introduced to humans through zoonosis (transmission of a pathogen to a human from an animal), and a zoonotic spillover event is the origin of COVID-19 that is considered most plausible by the scientific community.

6. www.ncbi.nlm.nih.gov › pmc › articlesCOVID-19—Zoonosis or Emerging Infectious Disease? - PMC

   www.ncbi.nlm.nih.gov › pmc › articles

   Nov 26, 2020 · More than 40 million human COVID-19 infections reported appear to be exclusively through human-human transmission. SARS-CoV-2 virus and COVID-19 do not meet the WHO definition of zoonoses. We suggest SARS-CoV-2 should be re-classified as an EID of probable animal origin.

   • Author: Najmul Haider, Peregrine Rothman-Ostrow, Abdinasir Yusuf Osman, Liã Bárbara Arruda, Laura Macfarlane...
   • DOI: 10.3389/fpubh.2020.596944

   • Publish Year: 2020
   • Publication: Front Public Health. 2020; 8: 596944.

7. www.nature.com › articles › s12276/021/00604-zOn the origin and evolution of SARS-CoV-2 | Experimental ...

   www.nature.com › articles › s12276/021/00604-z

   Apr 16, 2021 · SARS-CoV-2 has a zoonotic origin, similar to the causative viruses of these previous outbreaks. The repetitive introduction of animal viruses into human populations resulting in disease outbreaks...

   • Author: Devika Singh, Soojin V Yi

   • Publish Year: 2021

8. www.nejm.org › doi › pdfThe Origins of Covid-19 — Why It Matters (and Why It Doesn’t)

   www.nejm.org › doi › pdf

   Jun 7, 2023 · The two major hypoth-eses are a natural zoonotic spill-over, most likely occurring at the Huanan Seafood Wholesale Mar-ket, and a laboratory leak from the Wuhan Institute of Virology (WIV). It is...

9. www.nature.com › articles › s41564/020/0771-4Evolutionary origins of the SARS-CoV-2 sarbecovirus ... - Nature

   www.nature.com › articles › s41564/020/0771-4

   Jul 28, 2020 · In outbreaks of zoonotic pathogens, identification of the infection source is crucial because this may allow health authorities to separate human populations from the wildlife or domestic...