Rating Newest Oldest. Best Answer: I used to give immunizations for a living. A tetanus shot is usually given in the upper arm of anyone over the age of about 5 or 6.It is given with the same size needle as any other immunization, and feels pretty much the same-a sharp prick and it's over with. Some folks will feel a little sting, but that's over quickly as well.ating Newest Oldest. Best Answer: I used to give immunizations for a living. A tetanus shot is usually given in the upper arm of anyone over the age of about 5 or 6.