The formula for Model 1 is as follows: Logit (p)=-2.295 + 2.402×CXCL13 + 1.270 × CXCL10-148 ×CXCL8 + 2.252 ×Whether there are symptoms or not -1.534 × HIV co-infection+0.917×sero-TRUST titer. Here, CXCL10 is linked to coinfection.