of borderline significancep=0.091
For SCFAs, butyrate was significantly associated with extreme high vaccine response (aOR:10.00, 95% CI:1.81-107.2; p=0.025), while propionate was of borderline significance (aOR:1.33, 95% CI: 0.97-1.92; p=0.091) and acetate did not show significant association (aOR:1.01, 95% CI:0.99-1.02; p=0.368).