Previous sporadic studies have reported alterations in lymphocytes, C-reactive protein (CRP), and liver enzymes in individuals infected with COVID-19 (Abedzadeh-Kalahroudi et al., 2021; Choudhary, Singh & Bharadwaj, 2022; Muhidin, Behboodi Moghadam & Vizheh, 2020). Here, CRP is linked to COVID-19.