There were no significantly different in seropositivity and titers of NAbs between age (≤50 vs >50 years), total bilirubin level (≤5 times the upper limits of normal [ULN] vs >5×ULN), albumin level (<35 vs ≥35 g/L), cirrhosis (vs noncirrhotic), international normalized ratio (INR) value (≤1.5 vs >1.5), ACLF (vs non-ACLF), and vaccine types (inactivated vs subunit recombinant) (all p>0.05) (Figure 2). Here, ALB is linked to Cirrhosis.