id author title date pages extension mime words sentences flesch summary cache txt cord-337339-0vkigjv2 Osterrieder, Nikolaus Age-Dependent Progression of SARS-CoV-2 Infection in Syrian Hamsters 2020-07-20 .txt text/plain 4327 220 47 We propose that comparative assessment in young versus aged hamsters of SARS-CoV-2 vaccines and treatments may yield valuable information, as this small-animal model appears to mirror age-dependent differences in human patients. Moreover, transgenic mice expressing human ACE2 represent a lethal SARS-CoV-2 infection model resulting in significant weight loss and permitting robust virus replication in the respiratory tract including the lungs [20] . In contrast to SARS-CoV-2 titers, histopathological changes differed markedly between young and aged Syrian hamsters over time: younger animals launched more severe reactions at early time points after infection, while lesions and inflammation in the lungs became more pronounced and widespread at later time points in the elderly. Based on the data presented here, we propose that comparative preclinical assessments of SARS-CoV-2 vaccines and other treatment options in young versus aged hamsters may yield valuable and relevant results, as this small animal model appears to mimic age-dependent differences in humans. ./cache/cord-337339-0vkigjv2.txt ./txt/cord-337339-0vkigjv2.txt