If a vaccine immunity is going to last 10 years it'll last a lifetime, unless the specific cells in your bone marrow that remember the antibodies just happen to die - which can happen for many reasons. It's also possible to get vaccinated and not develop immunity (if injected into a vein instead of muscle for instance).
So they have people get tetanus 'boosters' that aren't really boosters just in case.
Lockjaw is a pretty bad way to go and the bacteria is everywhere in nature so personally I'd rather have peace of mind than the small risk not getting vaccinated again, but maybe you could do every 20 years instead of 10 or wait until you get a puncture wound.
If a vaccine immunity is going to last 10 years it'll last a lifetime, unless the specific cells in your bone marrow that remember the antibodies just happen to die - which can happen for many reasons. It's also possible to get vaccinated and not develop immunity (if injected into a vein instead of muscle for instance).
So they have people get tetanus 'boosters' that aren't really boosters just in case.
Lockjaw is a pretty bad way to go and the bacteria is everywhere in nature so personally I'd rather have peace of mind than the small risk not getting vaccinated again, but maybe you could do every 20 years instead of 10 or wait until you get a puncture wound.