Cancer is a big question because there are some cancers we're pretty advanced in treating and others where we're quite behind. It's not an easy question. Lyme disease per se, if you detect it early, responds very well to antibiotics. The problem is that often the symptoms are not clear; the diagnosis is not clear. The bacteria can live for a long time and then there are serious conditions. Even in those serious conditions, most of the time they respond to antibiotics, but again, there's a subset that will not.
I think your parallel with cancer is interesting because some cancers are relatively easily treatable and others are quite resistant to treatment. I would scale them in a similar fashion, although I have to say that cancer currently is affecting many more Canadians than Lyme disease. You have to put things into perspective also.