On Dec. 21, 2020, Quidel announced that it had received Emergency Use Authorization from the FDA to market its Sofia 2 Flu + SARS Antigen FIA, a rapid point-of-care test to be used with the Sofia 2 Fluorescent Immunoassay Analyzer for the rapid, simultaneous qualitative detection and differentiation of the nucleocapsid protein antigens from SARS-CoV-2, influenza A and influenza B in direct nasopharyngeal (NP) and nasal (NS) swab specimens from individuals suspected of respiratory viral infection consistent with COVID-19 by their healthcare provider within the first five days of the onset of symptoms.