Isolation and characterization of spike S2-specific monoclonal antibodies with reactivity to pan-coronaviruses

• Five broad-spectrum mAbs identified from COVID-19 convalescents and vaccinees possessed the ability to recognize spike S2 of pan-coronaviruses. • Five mAbs targeted distinct but conserved epitopes on spike S2 of pan-coronaviruses. • Three of these five mAbs were competitively bound to the fusion peptide epitopes of coronavirus spike protein.