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Humoral immune responses one month after the second vaccine dose in cirrhotic PWLD, non-cirrhotic PWLD and controls. (a) Anti-SARS-CoV-2 S1-protein IgG antibody titers; (b) neutralizing activity. PWLD—patients with liver disease; SARS-CoV-2—severe acute respiratory syndrome coronavirus 2; OD450—optical density of serum samples measured at 450 nm; ODcal—optical density of calibrator; ns—non-significant.
