Jan Jakub Gancarz
Jan Jakub Gancarz voted up HappyTwo BeHereTwo's answer

I double checked to be sure my memory was correct. 

http://www.medicinenet.com/script/main/art.asp?articlekey=47225&page=2

"If it has been more than 10 years since your last tetanus booster, contact your doctor to bring your immunizations up to date. A booster vaccination is also recommended if you sustain a deep, contaminated wound and more than five years have … Read more