Are There 18 Other Coronaviruses Before COVID-19?
“there was 18 other corona viruses before Covid-19.”
Summary
Only six human coronaviruses were known before SARS‑CoV‑2 emerged, bringing the total to seven identified human coronaviruses. Therefore, the claim that there were 18 other coronaviruses prior to COVID‑19 is inaccurate.
Sources 58 searched
- The species Severe acute respiratory syndrome-related coronavirus: classifying 2019-nCoV and naming it SARS-CoV-2 | Nature Microbiology
With respect to novelty, SARS-CoV-2 differs from the two other zoonotic coronaviruses, SARS-CoV and MERS-CoV, introduced to humans earlier in the twenty-first century. Previously, the CSG established that each of these two viruses prototype a new species in a new informal subgroup of the genus Betacoronavirus15,16. These two informal subgroups were recently recognized as subgenera Sarbecovirus and Merbecovirus18,28,29 when the subgenus rank was established in the virus taxonomy30. Being the first identified representatives of a new species, unique names were introduced for the two viruses and their taxa in line with the common practice and state of virus taxonomy at the respective times of isolation.
- Origin and evolution of pathogenic coronaviruses | Nature Reviews Microbiology
To date, numerous SARSr-CoV strains have been identified from bats15,16,18,19,20.
- Overview of lethal human coronaviruses | Signal Transduction and Targeted Therapy
Seven coronaviruses that infect humans have been identified: HCoV-229E, HCoV-OC43, HCoV-NL63, HCoV-HKU1, SARS-CoV, MERS-CoV, and SARS-CoV-2. Among them, SARS-CoV and MERS-CoV caused outbreaks in 2002 and 2012, respectively.
- Origin and evolution of SARS-CoV-2 - PMC
Likely, the spillover event(s) occurred in the context of locations where high-density population is in contact with live animals susceptible to SARS-CoV-2 infection and sold alive for food in the Wuhan markets that were the early and major epicenters of SARS-CoV-2. However, these highly related viruses were not identified in the animals present in the Wuhan markets during the initial phase of COVID-19 pandemic (Fig.
- Framing the Origins of COVID-19 - PMC
Conspiracy theories have flourished about the origins of a novel coronavirus (SARS-CoV-2) that causes an acute respiratory syndrome (coronavirus disease 2019 [COVID-19]) in humans. This article reports the results from a study that evaluates the ...
- The origins of COVID‐19 pandemic: A brief overview - PMC
(2021) analysed 40 composite influent wastewater samples taken from 5 wastewater treatment plants between October 2019 and February 2020, and identified 15 positive samples using techniques such as RT‐PCR, which can be traced back to Milan and Turin on 18 December 2019. A child who was suspected of having measles had SARS‐CoV‐2 antibodies detected by PCR in early December in the same area (Amendola et al., 2021). Environmental studies have also shown that the virus may exist earlier in Italy.
- Coronaviruses | NIAID: National Institute of Allergy and Infectious Diseases
However, three coronaviruses have ... (MERS-CoV), which emerged in 2012 and causes Middle East respiratory syndrome (MERS); and SARS-CoV-2, which emerged in 2019 and causes coronavirus disease 2019 (COVID-19)....
- Human Coronavirus Types | Human Coronaviruses | CDC
7. SARS-CoV-2 (a beta coronavirus) was first reported in 2020 and causes Coronavirus Disease 2019 (COVID-19).
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