[Positive thinking. Hopefully they don't fall into the trap of positive thinking themselves into the grave, honestly...]

If you don't feel feverish, that's a good sign, at least. ...Maybe we could boil some river water over the fire? That might not be a disinfectant, but it'll be a little cleaner than water straight from the river. You could wash it up again with that!

[But he doesn't even have any clean bandages to offer?!]