Severe COVID-19 is accompanied by increased MB, CRP, Tbil, Dbil, Neu counts and decreased LYM counts, PLT, and Cr clearance rate (Cao et al., 2020; Kronstein-Wiedemann et al., 2022; Lo et al., 2020; Lv et al., 2021; Zinellu et al., 2021). Here, MB is linked to COVID-19.