Novel transgenic mouse models have been developed to better recapitulate the range of severe acute disease seen in human COVID-19 by targeting tissue-specific pathways. Models like Rosa26hACE2 (Cre-mediated recombination allowing tissue-specific hACE2 expression, commercially available) and cell-specific hACE2 transgenic mice enable the study of SARS-CoV-2-induced severe lung disease by inducing targeted viral entry into alveolar type II cells and other lung epithelia, mimicking pneumonia and acute respiratory distress syndrome. These models also allow for the examination of neuroinvasion by measuring viral replication and associated brain pathology.