HP and infectious otitis media: Over time (from start to the 10th DSS cycle), the haptoglobin levels increased in all three groups, NC 0.73 mg/mL (0.47–0.90) (P < 0.001), DSS 0.75 mg/mL (0.51–0.98) (P = 0.029), and AOM 0.62 mg/mL (0.57–0.65) (P < 0.001).