Medical-Surgical Nursing 8th Edition by Donna Ignatavicius , Linda Workman

Exercise 2

A patient comes to the emergency room after stepping on a rusty nail while fixing a fence on his horse farm. He tells you that his last tetanus toxoid booster vaccination was about 12 years ago. The health care provider prescribes an injection of HyperTET, which contains concentrated pre-formed antibodies to the tetanus bacterium. The patient is instructed to return to his health care provider in 10 days to receive a tetanus "booster" vaccination.
Why does this patient need HyperTET now, and what type of immunity does it provide?