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Age-related susceptibility of ferrets to SARS-CoV-2 infection
Mathias Martins; Maureen H.V. Fernandes; Lok R Joshi; Diego Diel.
Afiliação
  • Mathias Martins; Cornell University College of Veterinary Medicine
  • Maureen H.V. Fernandes; Cornell University College of Veterinary Medicine
  • Lok R Joshi; Cornell University
  • Diego Diel; Cornell University College of Veterinary Medicine
Preprint em En | PREPRINT-BIORXIV | ID: ppbiorxiv-456510
Artigo de periódico
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ABSTRACT
Susceptibility to SARS-CoV-2 and the outcome of COVID-19 have been linked to underlying health conditions and the age of affected individuals. Here we assessed the effect of age on SARS-CoV-2 infection using a ferret model. For this, young (6-month-old) and aged (18-to-39-month-old) ferrets were inoculated intranasally with various doses of SARS-CoV-2. By using infectious virus shedding in respiratory secretions and seroconversion, we estimated that the infectious dose of SARS-CoV-2 in aged animals is [~]32 plaque forming units (PFU) per animal while in young animals it was estimated to be [~]100 PFU. We showed that viral replication in the upper respiratory tract and shedding in respiratory secretions is enhanced in aged ferrets when compared to young animals. Similar to observations in humans, this was associated with higher expressions levels of two key viral entry factors - ACE2 and TMPRSS2 - in the upper respiratory tract of aged ferrets.
Licença
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Texto completo: 1 Coleções: 09-preprints Base de dados: PREPRINT-BIORXIV Tipo de estudo: Observational_studies / Prognostic_studies Idioma: En Ano de publicação: 2021 Tipo de documento: Preprint
Texto completo: 1 Coleções: 09-preprints Base de dados: PREPRINT-BIORXIV Tipo de estudo: Observational_studies / Prognostic_studies Idioma: En Ano de publicação: 2021 Tipo de documento: Preprint