Chemokine responses in children and elderly during the acute COVID‐19 phase. (A) Plasma levels of CCL2, CCL3, CCL4, CCL5, CCL11, CCL19, and CCL20, as well as (B) CXCL1, CXCL2, CXCL8, CXCL10, and CX3CL1 were assessed in acute COVID‐19 children (n = 12), convalescent COVID‐19 children (n = 19), acute elderly COVID‐19 individuals (n = 35), and convalescent elderly COVID‐19 individuals (n = 114). In the graphical representation, the maroon color corresponds to acute COVID‐19 children, pink represents convalescent COVID‐19 children, dark blue denotes acute elderly COVID‐19 individuals, and light blue signifies convalescent elderly COVID‐19 individuals. The data are presented as boxes and whiskers, with each circle representing an individual. Statistical significance (p values) was determined using the Mann–Whitney U test with Holm's analysis for multiple comparisons.