Tetanus is nasty and can still kill. The best cures are prevention.
If you haven’t had a jab for over ten years, best to get one now. If you cut yourself on anything rusty, get a booster jab ASAP either from your JP or Accident and Emergency, which is where you go with injuries.
If things go badly wrong, you may not be able to, and the chances of getting cut will be increased. So if you haven’t had one for the last ten years, get one from your JP, and if you get cut and haven’t had one for a while, get a booster jab.