DD was playing on the green with some friends, another child brought over a fence panel (don't ask) and managed to drop it on her foot. Nice puncture wound from a screw. Took her to minors and they cleaned and dressed it. Nurse said if she's up to date with imms she shouldn't need a tetanus jab, but NHS website says 5 doses are needed for full protection. DD is 10 so has only had 4. So I'm confused, should I take her back and ask for a booster or not?!