[Influence of reintervention by the bacillus of Calmette and Guérin (BCG) on the nonspecific resistance of the mouse to Schistosoma mansoni (author's transl)].

Significant resistance to Schistosoma mansoni appears in mice two weeks after treatment with BCG. The state of nonspecific resistance is considerably increased if the injection of BCG two weeks prior to the infestation test is carried out using mice who have already received BCG. Thus, BCG innoculation in an organism presentized to the bacillus antigens increases immunostimulation.