We found that NK cells, especially for NK_Naive, NK_Memory and NK_CD56(dim), in brucellosis patients potentially underwent migration (Figure 6G, Figure S8D), with several migration‐related genes highly expressed like CCL4, CXCR5, CCL18, CXCL2, and so forth (Figure 6G). Here, CCL18 is linked to brucellosis.