[There's a sigh from McCoy at that, a silence, and then an answer that's had all snark removed in favour of flat honesty.]

The drugs are effective for the first stage. For the second stage, we've got nothing that can touch it. I've been trying antivirals, but they work about as well as sugar pills. It's all down to how much they have left to fight it with after first stage. I wish I had more options than that, son. I really do.