Years ago the tetanus shot was a tetanus shot and good for 10 years. At my work when I started a few years back they offered a tetanus shot for employees but it was combined with whooping cough if I remember correctly. I asked why and she couldn't give me an answer. I asked about just getting tetanus and she told me that wasn't available. I have refused all shots from my employer and signed a waiver because of it. I'm now wondering if my signing of that waiver can be my ticket out if they try to mandate the jab which they are trying now by offering employees a paid vacation day to take the jab. Unfortunately quite a few of the employees have already been double jabbed. Time will tell. Personally I would not recommend anyone to take ANY shots offered for anything.