Fig. 1

The immune response to SARS-CoV-2 vaccines in HSCT recipients. A Boxplots of seropositive rates (%) after the first, second and third dose of vaccination; B boxplots of seropositive rates (%) according to the interval between transplant and vaccination (< 6 months, between 6 and 12 months and ≥ 12 months); C boxplots of seropositive rates (%) in autoHSCT recipients according to underlying diseases (lymphoma or myeloma); D pooled analysis of T-cell response rate based on IFN-γ ELISPOT assay after vaccination. In boxplots, each point indicates a study cohort where data were available. Pairwise comparisons are based on the nonparametric Mann–Whitney U independent-samples test