CRP and COVID-19: More severe manifestations of COVID-19 are associated with an excessive immune and inflammatory response, characterized by elevated serum levels of C-Reactive Protein (CRP), D-Dimer (D-D), Lactate Dehydrogenase (LDH), Neutrophil-to-Lymphocyte ratio (NLR), ferritin and several pro-inflammatory cytokines, the so-called “cytokine storm”[4, 5].