Fig. 4From: Response to three doses of the Pfizer/BioNTech BNT162b2 COVID-19 vaccine: a retrospective study of a cohort of haemodialysis patients in FranceCorrelation between the anti-S1 Ig titre and age. Data are shown for patients with two or three doses of vaccine (n = 111) for the first (a) and second (b) serology assaysBack to article page