The relative dynamics of infection with the Delta and Omicron SARS-CoV-2 variants in aged and young Syrian hamsters

Researchers demonstrated the relative pathogenicity of SARS-CoV-2 Omicron and Delta variants of concern in Syrian hamsters.

Infectiousness of SARS-CoV-2 breakthrough infections and reinfections during the Omicron wave

Frontiers Heterologous immunity induced by 1st generation COVID-19 vaccines and its role in developing a pan-coronavirus vaccine

Frontiers Experimental Models of COVID-19

SARS‐CoV‐2 in animals: susceptibility of animal species, risk for animal and public health, monitoring, prevention and control - - 2023 - EFSA Journal - Wiley Online Library

Host parameters and mode of infection influence outcome in SARS-CoV-2-infected hamsters - ScienceDirect

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Omicron: What Makes the Latest SARS-CoV-2 Variant of Concern So Concerning?

Limited cross-variant immunity from SARS-CoV-2 Omicron without vaccination

Virological characteristics of the SARS-CoV-2 Omicron BA.2 subvariants, including BA.4 and BA.5 - ScienceDirect

Frontiers Experimental Models of COVID-19

A Heterologous Challenge Rescues the Attenuated Immunogenicity of SARS-CoV-2 Omicron BA.1 Variant in Syrian Hamster Model