Mann-Whitney U and Chi-square tests compared groups (SPSS v26.0), with significance at p < 0.05.<h4>Results</h4>The scrub typhus group had significantly higher CD64 levels (median: 2.90 [IQR: 1.00-5.20]) than non-specific fever (0.23 [0.10-0.58], p < 0.001). This evidence concerns the gene FCGR1A and scrub typhus.