The need for tetanus vaccine for a bleeding finger cut by a piece of iron generally depends on the depth of the wound and the degree of contamination of the iron. If the wound is shallow and the slices are clean, the injection can be dispensed with; conversely, the tetanus vaccine should be administered promptly.
Tetanus bacillus is a common anaerobic bacterium. If the wound is very shallow, the wound localization is not easy to produce an anaerobic environment, and the iron slice that cut the finger is cleaner, the risk of tetanus infection will be lower, and it is usually not necessary to go to the hospital for tetanus vaccination. However, care should be taken to clean the wound, sterilize it with iodophor and dress it to prevent bacterial infection.
The probability of having tetanus bacilli on the iron is relatively high if the piece of iron that cut your finger is contaminated with rust stains or soil. When this cuts the skin out of blood and the wound is deep, you should go to the hospital as soon as possible within 24 hours for wound treatment and tetanus vaccination.
After the finger is cut by the iron piece, it is recommended to go to the hospital to see a professional doctor for debridement and to judge whether it is necessary to inject tetanus vaccine to prevent infection.