The omicron (B.1.1.529) SARS-CoV-2 variant of concern does not readily infect Syrian hamsters.
Antiviral Res
; 198: 105253, 2022 02.
Article
in English
| MEDLINE | ID: covidwho-1654044
Preprint
This scientific journal article is probably based on a previously available preprint. It has been identified through a machine matching algorithm, human confirmation is still pending.
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This scientific journal article is probably based on a previously available preprint. It has been identified through a machine matching algorithm, human confirmation is still pending.
See preprint
ABSTRACT
The emergence of SARS-CoV-2 variants of concern (VoCs) has exacerbated the COVID-19 pandemic. End of November 2021, a new SARS-CoV-2 variant namely the omicron (B.1.1.529) emerged. Since this omicron variant is heavily mutated in the spike protein, WHO classified this variant as the 5th variant of concern (VoC). We previously demonstrated that the ancestral strain and the other SARS-CoV-2 VoCs replicate efficiently in and cause a COVID19-like pathology in Syrian hamsters. We here wanted to explore the infectivity of the omicron variant in comparison to the ancestral D614G strain in the hamster model. Strikingly, in hamsters that had been infected with the omicron variant, a 3 log10 lower viral RNA load was detected in the lungs as compared to animals infected with D614G and no infectious virus was detectable in this organ. Moreover, histopathological examination of the lungs from omicron-infected hamsters revealed no signs of peri-bronchial inflammation or bronchopneumonia.
Keywords
Full text:
Available
Collection:
International databases
Database:
MEDLINE
Main subject:
Disease Models, Animal
/
SARS-CoV-2
/
COVID-19
Type of study:
Diagnostic study
Topics:
Variants
Limits:
Animals
/
Humans
Language:
English
Journal:
Antiviral Res
Year:
2022
Document Type:
Article
Affiliation country:
J.ANTIVIRAL.2022.105253
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