I was pricked by an iron needle. There is no bleeding. Do you need an injection?

Tetanus is a Clostridium infection. Tetanus invades human wounds, grows and produces toxins, which can lead to acute specific infection. Tetanus and its toxins cannot invade normal skin and mucosa, so tetanus appears after injury. All open injuries can cause tetanus.

Tetanus is an anaerobic bacterium, which is widely distributed in the natural environment. Very shallow epidermal injury, because it is an aerobic environment, there is no environment where tetanus can breed, and the toxin produced does not enter the blood and nerves, so it is not necessary to break the resistance. If it goes deep, especially the rusty iron needle, you must hit it. On the contrary, if the needle is not rusty and the puncture is shallow, there is no need to hit it.

If you are worried and can't judge, go to the hospital. Tetanus antitoxin injection is effective within 24 hours, and more injections are needed between 24 hours and 48 hours.