Most notably is the protein scavenger receptor class B member 2 (SCARB2) which in our study is the most significant elevated protein at infection, but is not shown to be elevated in the severe patients according to Filbin et al [16], although the Patel study reported increasing levels of the protein in groups with severe (hospitalized and requiring oxygen supplementation) and critical (mechanical ventilation or death) COVID-19 disease [15]. This evidence concerns the gene SCARB2 and infection.