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Viral load and test positivity in nasal washes of experimentally infected hamsters. Threshold cycle (CT) values for genomic (gRNA) (A), subgenomic RNA (sgRNA) (B), and viral titers (C) in nasal washes. (D) Test positivity of gRNA, sgRNA, viral culture, and two RAgT assays for SARS-CoV-2. Dotted lines represent the limits of detection of gRNA, sgRNA, and viral titers.
