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Pathology and immunity after SARS-CoV-2 infection in male ferrets is affected by age and inoculation route (preprint)
biorxiv; 2021.
Preprint
en Inglés
| bioRxiv | ID: ppzbmed-10.1101.2021.06.30.450298
ABSTRACT
Improving COVID-19 intervention strategies partly relies on animal models to study SARS-CoV-2 disease and immunity. In our pursuit to establish a model for severe COVID-19, we inoculated young and adult male ferrets intranasally or intratracheally with SARS-CoV-2. Intranasal inoculation established an infection in all ferrets, with viral dissemination into the brain and gut. Upon intratracheal inoculation only adult ferrets became infected. However, neither inoculation route induced observable COVID-19 symptoms. Despite this, a persistent inflammation in the nose was prominent in especially young ferrets and follicular hyperplasia in the bronchi developed 21 days post infection. These effects -if sustained- might resemble long-COVID. Respiratory and systemic cellular responses and antibody responses were induced only in animals with an established infection. We conclude that intranasally-infected ferrets resemble asymptomatic COVID-19 and possibly aspects of long-COVID. Combined with the increasing portfolio to measure adaptive immunity, ferrets are a relevant model for SARS-CoV-2 vaccine research.
Texto completo:
Disponible
Colección:
Preprints
Base de datos:
bioRxiv
Asunto principal:
Síndrome Respiratorio Agudo Grave
/
COVID-19
/
Hiperplasia
/
Inflamación
Idioma:
Inglés
Año:
2021
Tipo del documento:
Preprint
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