Regarding COVID-19, recent studies have found that GM richness was not restored to eubiotic conditions six months after primary SARS-CoV-2 infection, and patients with highest level of C-reactive Protein (CRP) and illness severity during the acute phase also showed lower post-convalescence richness, suggesting close correlations between inflammatory response and gut dysbiosis in COVID-19 [8]. This evidence concerns the gene CRP and COVID-19.