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01-12-2020 | SARS-CoV-2 | Research

Evidence of a wide gap between COVID-19 in humans and animal models: a systematic review

Authors: Salleh N. Ehaideb, Mashan L. Abdullah, Bisher Abuyassin, Abderrezak Bouchama

Published in: Critical Care | Issue 1/2020

Abstract

Background

Animal models of COVID-19 have been rapidly reported after the start of the pandemic. We aimed to assess whether the newly created models reproduce the full spectrum of human COVID-19.

Methods

We searched the MEDLINE, as well as BioRxiv and MedRxiv preprint servers for original research published in English from January 1 to May 20, 2020. We used the search terms (COVID-19) OR (SARS-CoV-2) AND (animal models), (hamsters), (nonhuman primates), (macaques), (rodent), (mice), (rats), (ferrets), (rabbits), (cats), and (dogs). Inclusion criteria were the establishment of animal models of COVID-19 as an endpoint. Other inclusion criteria were assessment of prophylaxis, therapies, or vaccines, using animal models of COVID-19.

Result

Thirteen peer-reviewed studies and 14 preprints met the inclusion criteria. The animals used were nonhuman primates (n = 13), mice (n = 7), ferrets (n = 4), hamsters (n = 4), and cats (n = 1). All animals supported high viral replication in the upper and lower respiratory tract associated with mild clinical manifestations, lung pathology, and full recovery. Older animals displayed relatively more severe illness than the younger ones. No animal models developed hypoxemic respiratory failure, multiple organ dysfunction, culminating in death. All species elicited a specific IgG antibodies response to the spike proteins, which were protective against a second exposure. Transient systemic inflammation was observed occasionally in nonhuman primates, hamsters, and mice. Notably, none of the animals unveiled a cytokine storm or coagulopathy.

Conclusions

Most of the animal models of COVID-19 recapitulated mild pattern of human COVID-19 with full recovery phenotype. No severe illness associated with mortality was observed, suggesting a wide gap between COVID-19 in humans and animal models.

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Title: Evidence of a wide gap between COVID-19 in humans and animal models: a systematic review
Authors: Salleh N. Ehaideb
Mashan L. Abdullah
Bisher Abuyassin
Abderrezak Bouchama
Publication date: 01-12-2020
Publisher: BioMed Central
Keywords: SARS-CoV-2
COVID-19
Published in: Critical Care / Issue 1/2020
Electronic ISSN: 1364-8535
DOI: https://doi.org/10.1186/s13054-020-03304-8

At a glance: The ONWARDS insulin icodec trials

Springer Medicine

Evidence of a wide gap between COVID-19 in humans and animal models: a systematic review

Abstract

Background

Methods

Result

Conclusions

At a glance: The ONWARDS insulin icodec trials

Springer Medicine

Abstract

Background

Methods

Result

Conclusions

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