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Number/percentage of case reports/series that reported at least one inflammation marker above the threshold that may indicate hyperinflammation/cytokine storm syndrome (CSS) in children/adolescents (a), adults (b) or children/adolescents and adults (c). Hyperinflammation/CSS was defined as CRP > 150 mg/L and/or ferritin > 1500 ng/mL or IL-6 > 80 pg/mL.
