KRT88P and nosocomial infection: In the HBeAg (−) CHB patients, serum anti-HBc levels also differed significantly between HAI score (HAI 0–4: 4.21 ± 0.53 vs. HAI 5–6: 4.54 ± 0.60, P < 0.001; HAI 5–6 vs. HAI 7–9: 4.74 ± 0.56, P < 0.05; HAI 7–9 vs. HAI 10–18: 5.06 ± 0.37, P < 0.05) (Fig. 1b).