Compared with hospitalized patients with COVID-19 without DM, those with DM have worse clinical profiles and outcomes, such as higher blood glucose, HbA1c, white blood cell count, high-sensitivity C-reactive protein, procalcitonin, ferritin, D-dimer, lactic dehydrogenase, N-terminal pro-brain natriuretic peptide and mortality [35]. Here, CRP is linked to COVID-19.