"Well," he says, a little quietly, just a hint of rough unhappiness creeping into his voice. "Safe from this."

He's quiet a moment. Then he stands up, unfolding himself from his crouch beside that head to his normal lanky height. "One's mind," he says, rather carefully - carefully meaning that he very deliberately adopts a tone of vague unconcern, "cannot help but also go to the prospects of this. If whatever brought you through time and space to this planet, if that is what it was, eliminated the virus, that could potentially have - hm - implications for those you left behind."

Of course, it seems rather more likely at this point that the whole thing was a cruel joke created by some monstrous people - that the dead do not indeed rise, that this poor girl has been lied to and deluded. But he'll not bring up that possibility.