Hui, DS;
Zumla, A;
Tang, JW;
(2021)
Lethal zoonotic coronavirus infections of humans - comparative phylogenetics, epidemiology, transmission, and clinical features of coronavirus disease 2019, The Middle East respiratory syndrome and severe acute respiratory syndrome.
Current Opinion in Pulmonary Medicine
, 27
(3)
pp. 146-154.
10.1097/MCP.0000000000000774.
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Abstract
Purpose of review: Severe acute respiratory syndrome-coronaviruses-2 (SARS-CoV-2), the cause of coronavirus disease 2019 (COVID-19), emerged as a new zoonotic pathogen of humans at the end of 2019 and rapidly developed into a global pandemic. Over 106 million COVID-19 cases including 2.3 million deaths have been reported to the WHO as of February 9, 2021. This review examines the epidemiology, transmission, clinical features, and phylogenetics of three lethal zoonotic coronavirus infections of humans: SARS-CoV-1, SARS-CoV-2, and The Middle East respiratory syndrome coronavirus (MERS-COV). Recent findings: Bats appear to be the common natural source of SARS-like CoV including SARS-CoV-1 but their role in SARS-CoV-2 and MERS-CoV remains unclear. Civet cats and dromedary camels are the intermediary animal sources for SARS-CoV-1 and MERS-CoV infection, respectively whereas that of SARS-CoV-2 remains unclear. SARS-CoV-2 viral loads peak early on days 2–4 of symptom onset and thus high transmission occurs in the community, and asymptomatic and presymptomatic transmission occurs commonly. Nosocomial outbreaks are hallmarks of SARS-CoV-1 and MERS-CoV infections whereas these are less common in COVID-19. Several COVID-19 vaccines are now available. Summary: Of the three lethal zoonotic coronavirus infections of humans, SARS-CoV-2 has caused a devastating global pandemic with over a million deaths. The emergence of genetic variants, such as D614G, N501Y (variants 1 and 2), has led to an increase in transmissibility and raises concern about the possibility of re-infection and impaired vaccine response. Continued global surveillance is essential for both SARS-CoV-2 and MERS-CoV, to monitor changing epidemiology due to viral variants.
| Type: | Article |
|---|---|
| Title: | Lethal zoonotic coronavirus infections of humans - comparative phylogenetics, epidemiology, transmission, and clinical features of coronavirus disease 2019, The Middle East respiratory syndrome and severe acute respiratory syndrome |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1097/MCP.0000000000000774 |
| Publisher version: | http://dx.doi.org/10.1097/MCP.0000000000000774 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | Respiratory System, coronaviruses, coronavirus disease 2019, The Middle East respiratory syndrome, The Middle East respiratory syndrome coronavirus, severe acute respiratory syndrome, severe acute respiratory syndrome-coronaviruses-1, severe acute respiratory syndrome-coronaviruses-2, SYNDROME SARS, SAUDI-ARABIA, MERS-CORONAVIRUS, INDEX PATIENT, VIRAL LOAD, OUTBREAK, SARS-COV-2, ANTIBODIES, RESERVOIRS, PNEUMONIA |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Medical Sciences UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Medical Sciences > Div of Infection and Immunity |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10136367 |
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