SARS-CoV-2 infection and persistence throughout the human body and brain
COVID-19 is known to cause multi-organ dysfunction1-3 in acute infection, with prolonged symptoms experienced by some patients, termed Post-Acute Sequelae of SARS-CoV-2 (PASC)4-5. However, the burden of infection outside the respiratory tract and time to viral clearance is not well characterized, particularly in the brain3,6-14. We performed complete autopsies on 44 patients with COVID-19 to map and quantify SARS-CoV-2 distribution, replication, and cell-type specificity across the human body, including brain, from acute infection through over seven months following symptom onset. We show that SARS-CoV-2 is widely distributed, even among patients who died with asymptomatic to mild COVID-19, and that virus replication is present in multiple extrapulmonary tissues early in infection. Further, we detected SARS-CoV-2 RNA in multiple anatomic sites, including regions throughout the brain, for up to 230 days following symptom onset. Despite extensive distribution of SARS-CoV-2 in the body, we observed a paucity of inflammation or direct viral cytopathology outside of the lungs. Our data prove that SARS-CoV-2 causes systemic infection and can persist in the body for months.
Amy Proal, PhD
7/ In addition to ddPCR, the team used ISH to identify SARS-CoV-2 #spike
RNA across selected early, mid + late cases. Spike RNA was found in #neurons
, glia and ependyma, as well as endothelium of vessels across all lobes of the brain of early, mid, and late cases
8/ Within the cerebellum specifically, neurons, Purkinje cells, and endothelium of #vasculature
also contained spike protein via IHC