Tetanus + diphtheria (Td) booster
Td booster every 10 years lifelong. If last booster >10 y or unknown: give one Td-containing dose now and document.
Germany combines as Td-IPV every 10 y; next booster after age 18 SHOULD include pertussis once (Tdap-IPV) for adult cocoon protection — then revert to Td-IPV.