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SARS-CoV-2 antigen reactivity by site (age=/>18 years) in COVID-19 naïve Malian samples. A) Spike protein B) RBD C) NCP. SARS-CoV-2 antigen reactivity by age group (Kalifabougou site) D) Spike protein E) RBD F) NCP.
Med: median OD value, OD: optical density, RBD: receptor binding domain, NCP: nucleocapsid protein, O’bougou: Ouelessebougou site, K’bougou: Kalifabougou site
**** represents p<0.0001, * represents p=0.01-0.05 using Kruskal-Wallis test.
