The cell clusters derived from CD4+ or CD8+ T cells were not predictive of IgG pertussis vaccine response at weeks 15 and 36 (Fig. 4D and S7C), for CD4 clusters at birth: AUC = 0.73, p = 0.064; for CD8 clusters: AUC = 0.69, p = 0.12; at week 4: CD4 clusters AUC = 0.70, p = 0.055; CD8 clusters AUC = 0.70, p = 0.053. The gene discussed is CD8A; the disease is pertussis.