It's been more than 10 years since my last tetanus shot. shall i take it as a precaution? or wait for when i need it (e.g. in case of injury?)

You may not notice : Tetanus spores are everywhere in the environment & need only a break in the skin to set up and begin the low grade infection that creates tetanus toxin.Waiting until you have in injury that you believe may be a problem may be too late.At 38, the best booster for you covers tetanus, diphtheria & pertussis, which helps protect you & prevents you from giving whooping cough to a vulnerable young infant.

Immunize now w/TdaP: Here's more information to better understand the diseases you can prevent with a tdap vaccine and the benefits of protection: http://www.Cdc.Gov/vaccines/pubs/vis/downloads/vis-td-tdap.Pdf.