Last night I made a post about my mom giving me a jewelry box full of antique jewelry. I was worried that they might be rusty even though they didn't look it, or if wearing them could give me lockjaw/tetanus/something funky. A girl replied that if I haven't yet, I should get my tetanus shot updated. She didn't reply back so now I'm asking here: How long do tetanus shots last? I searched and came up with 1 year, 5 years, and 10 years. My last tetanus shot was when I was 16 [I'm nineteen now]. Should I be okay?