Comparison of the SARS-CoV-2 spike protein ELISA and the Abbott Architect SARS-CoV-2 IgG nucleocapsid protein assays for detection of antibodies. oleh Ashutosh Wadhwa, Sherry Yin, Brandi Freeman, Rebecca B Hershow, Marie Killerby, Anna R Yousaf, Sandra Lester, Lisa Mills, Sean A Buono, Mary Pomeroy, Daniel Owusu, Victoria T Chu, Jacqueline E Tate, Sanjib Bhattacharyya, Patricia Hall, Natalie J Thornburg, Hannah L Kirking