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Distant lymph nodes serve as pools of Th1 cells induced by neonatal BCG vaccination for the prevention of asthma in mice

Neonatal Bacillus Calmette–Guérin (BCG) vaccination induces vigorous T‐helper type 1 (Th1) responses and inhibits allergy‐related airway dysfunction, but the exact mechanisms remain unclear. The objective of this study was to address where the Th1 cells induced by neonatal BCG vaccination are generated and stored, and how they are recruited into the inflamed airway for the prevention of allergen‐induced airway inflammation.