Continuous time post-HCT as a moderator of vaccine-induced immunogenicity. Depicted are the aGMRs and corresponding point-wise 95% confidence intervals as a function of time post-HCT (months). We only depict this over the first 24 m due to sparsity of data outside that time range. The strength of evidence is shaded based on superiority (P < 0.05), trending superiority (P > 0.05 but aGMR > 1.25 or aGMR < 0.8), or no clear trend (all other cases); *B/Yamagata was not included in HD-TIV. Abbreviations: aGMR, adjusted geometric mean ratio; HD-TIV, high-dose trivalent influenza vaccine; SD-QIV, standard-dose quadrivalent influenza vaccine.