Elsewhere, eotaxins, a group of chemokines involved in the chemotaxis of eosinophils, revealed conflicting results: in the previous study, eotaxin-1 and eotaxin-3 were reduced in COVID-19 (Lucas et al., 2020) similarly to another immunophenotyping study in which eotaxin-1 was reduced (Mathew et al., 2020). Here, CCL11 is linked to COVID-19.