You don’t have to get tetanus if you get stabbed by a needle. You can skip the injection if the wound is shallow and the needle is clean; you need to get a tetanus injection if the wound is deep and the needle is not clean or even rusty. Tetanus is an infection caused by Clostridium tetani, which multiplies in an anaerobic environment. When stuck with a needle it is possible to develop an infection. If the needle is clean and the wound is shallow, the risk of infection is small, so you can not inject, disinfect the wound, and keep the wound clean; if the wound is deep and the needle is not clean, especially with rust, the chance of infection is greatly increased, so you need to inject in time. To summarize, whether you need to take a tetanus shot after being stabbed by a needle depends on the condition of the wound and the needle, and you can consult a medical professional for advice. For safety reasons, it is recommended to get a tetanus shot after being stabbed by a needle, and the inoculation should be done at a regular vaccination center.