We found a high expression of APOBEC3A, APOBEC3B, APOBEC3C, APOBEC3D, APOBEC3F, APOBEC3G and APOBEC3H in the classical, intermediate monocytes and NK cells of the COVID-19 patients compared to the healthy or recovered individuals (Figure 3B). Here, APOBEC3F is linked to COVID-19.