“…We read the interesting paper by Fernández-Miaja et al where they report four cases of Campylobacter jejuni infection in patients with an initial diagnostic suspicion of multiinflammatory syndrome in children (MIS-C) and highlight the importance of ruling out other potential diagnosis in order to avoid unnecessary diagnostic tests and treatment [ 1 ]. Interestingly, two of their cases showed marked lymphopenia (<1000/mm 3 ), one of them with associated elevated C-reactive protein values.…”