3) Corroboration of results using a commercial kit ELISA based on the spike RBD antigen s
This finding of the presence of SARS COV-2 like antibodies in Camels in Kenya based on our crude lysate ELISA, was corroborated by the results obtained using the commercial kit based on the Spike specific RBD antigen (Figure 9 & 10). One potential explanation for the generally higher OD scores in crude lysate ELISA relative to the commercial kit is that the crude lysate ELISA could include up to 4 (NP, S1 & S2 and M) major antigens as opposed to the single antigen (Spike RBD) in the commercial kit.