If I gave myself a little scratch on a rusted rack at work, do I need a tetanus shot? It's not deep at all just a surface scratch

Scratch: rusty nail. Everyone should keep their tetanus vaccination up to date, because you just never know when you might get scratched by something. If you work around rusty things, it is especially important for you. Yes, call your doctor today to see if your tetanus booster is up to date, and if it isn't, you'll need to get one. Wash out the cut thoroughly with soap and water.