Fig. 1: The neutralizing anti-Hla response is a vaccine target early in life.

a Half-maximal effective concentration of anti-Hla reactive antibodies in sera from children within the designated age groups (Log EC50). b Serum-based protection against Hla-mediated (2 nM) rRBC lysis. Protection noted as percent compared to toxin-only control. For a, b, 75th and 25th (black) and 50th (red) percentiles noted. Data were analyzed by one-way ANOVA with Tukey’s multiple comparisons test. *p < 0.05, **p < 0.01, ***p < 0.001, ****p < 0.0001. Source data are provided as a Source Data file.