Do you recall when your last ‘tetanus shot’ was? Actually it is a tetanus booster. If you have had all initial vaccines all you would in time is a ‘boost’ to your immunity. Immunity does not last for life for certain vaccines.
How to recall when? We almost all have a ‘Smartphone’ if not a health recording app so lets put them to use.
Just the way you have an I.C.E. (In Case Emergency) contact in your phonebook ADD a contact ‘Tetanus’ and for the phone number input date.
You never know when you are going to incur a break in your skin from an injury. The rough rule of needing a tetanus booster is ’10 years for ‘clean’ cuts, 5 years for ‘dirty cuts’.
It is simple to take the guesswork out of your next medical encounter and avoid a ‘shot’ as well as cost.