“…We developed two immunochromatographic assay (ICA) kits to detect SARS-CoV-2 Wuhan strain[ 4 ] and a delta variant of SARS-CoV-2 [ 5 ], respectively. These kits used monoclonal antibodies against the nucleocapsid (N) protein [amino acid (aa) 1–419] of SARS-CoV-2 Wuhan strain.…”