A Genome-wide Association Study in COVID-19 patients with respiratory failure identified a susceptibility locus at a chromosome 3p21.31 gene cluster, which includes the genes encoding the chemokine receptors CCR9, CXCR6 and XCR1, while genes for CCR1 and CCR2 flank the region (The Severe Covid-19 GWAS Group, 2020). This evidence concerns the gene CCR2 and COVID-19.