We have previously shown that the Toxoplasma load in the acute phase of infection can be lowered by adoptive transfer of naive CD8 TN T cells specific for one epitope in the susceptible C57BL/6 mouse model.8 Unsurprisingly, in this model we did not observe a significant increase in survival when the mice were challenged with a lethal dose of Toxoplasma. Most likely, the transferred T‐cell clone is not the immunodominant one, or alternatively a cocktail of CD8 T‐cell specificities would be needed. This evidence concerns the gene CD8A and infection.