In a meta-analysis of 56 studies and 8719 COVID-19 patients, Ji et al. demonstrated that patients with severe COVID-19 had significantly higher WBC, CRP, ESR, and procalcitonin (PCT) [14]. In another meta-analysis of 16 studies and 3962 COVID-19 patients, Zeng et al. showed that patients with less severe disease had lower levels of CRP, PCT, and ESR [15]. Here, CRP is linked to COVID-19.