CRP and nosocomial infection: Bivariate analysis showed increased hospital mortality associated with male gender, increasing age, previous comorbidities (T2DM, hypertension, cardiovascular disease, and ischaemic heart disease), higher Charlson comorbidity index score, lower SpO2 on admission, baseline lymphocyte count < 800 cells/μL, C-reactive protein (CRP) > 10 mg/dL, ferritin > 500 ng/mL, DHL > 245 U/L, D-dimer > 1000 ng/mL, SpO2/FiO2 ratio < 300, ICU admission, use of IMV, and development of HAI.