OLFML3 and bacterial infectious disease: The genes associated with the scores of BM and VM in the classification model can be found in Supplementary Fig. 2 and some genes are knowingly associated with infections, such as ASRGL1, NR2F6, and OLFML3 for bacterial infection (Fig. 4E) and STIP1, PGAM5, and AKAP8 for viral infections (Fig. 4F).