“…7 IL-2 at low levels expands the population of CD4+ CD25+-Foxp3+ regulatory T cells, which decrease neuroinflammation and delay the onset of AD. 8,9 BCG, which is usually given to patients with bladder cancer who are mentally sound, will take effect in the preclinical stage of AD and can potentially slow its clinical onset. So, can BCG delay the onset of AD?…”