In particular, Udompornpitak et al. [19] observed a strong correlation between both neutrophilia and cytokinemia in COVID-19 patients and blood concentrations of bacterial lipopolysaccharide (LPS)—a TLR4 activator—as well as with (1→3)-β-D-glucan (BG), which is recognized mainly by dectins on monocytic cells [197]. This evidence concerns the gene TLR4 and COVID-19.