SARS-CoV-2 was isolated from
a COVID-19 positive-tested patient.64 (link) We
used K18-hACE2 humanized mice (B6.Cg-Tg(K18-ACE2)2Prlmn/J)32 (link),65 (link),66 (link) from Jackson Laboratory, which
has been used as model for SARS-CoV-2-induced disease.65 (link)−71 (link) Mice were breed in the Centro de Criação de Animais
Especiais (Ribeirão Preto Medical School/University of São
Paulo). Experiments were approved by the University of Sao Paulo ethics
committee (protocol number 105/2021). Mice had access to food and
water ad libitum. Animals were transferred to the BSL3 facility for
the experimental infection.