IP-10 levels did not correlate with estimated duration of infection (r = -0.06, P = 0.60) and the relationship between RVR and IP-10 remained significant after controlling for estimated duration of infection (adjusted OR for RVR with IP-10<150 pg/mL: 0.29, 95% CI 0.09–0.94, P = 0.039). Here, CXCL10 is linked to infection.