Mucosal Bacille Calmette-Guérin Vaccination of Humans Inhibits Delayed-Type Hypersensitivity to Purified Protein Derivative but Induces Mycobacteria-Specific Interferon-γ Responses

Abstract
We conducted a placebo-controlled, double-dose-escalation trial of oral bacille Calmette-Guérin (BCG) vaccination in 48 healthy volunteers. Seven of