Figure 4
The frequency of PPD-specific secreting IFNγ cells in peripheral blood collected measured using an ex-vivo ELISPOT assay during the first 18 months of life. Blue: BCG vaccinated (n = 34), black: unvaccinated (n = 9). Medians shown with interquartile range. Mann–Whitney-U tests between groups carried out where *p ≤ 0.05, **p ≤ 0.01. Data for weeks 6–20 were previously published as part of a larger data set by Sarfas et al.202113.
