Tetanus as an infectious disease

Tetanus bacteria can live in soil, dust, and animal waste. Infection begins when spores enter broken skin, often through a puncture, cut, burn, bite, crush injury, or wound containing dirt. In low-oxygen tissue, the bacteria can produce a toxin that disrupts nerve control of muscles. Tetanus is infectious because bacteria cause the illness, but it is not usually contagious between people. The characteristic illness may cause jaw stiffness, neck or abdominal rigidity, difficulty swallowing, and painful spasms.

Wash wounds promptly with soap and running water and remove visible dirt. Seek clinical advice for deep, puncture, crush, burn, bite, or heavily contaminated injuries. Keep a record of tetanus vaccinations and tell the clinician if it is incomplete or uncertain. Vaccination trains the immune system to recognise the toxin, while careful wound management removes contamination and damaged tissue that can support bacterial growth.

Get emergency help for jaw stiffness, trouble swallowing, painful spasms, severe neck or abdominal stiffness, or breathing difficulty after a wound. These symptoms can worsen and require hospital monitoring. A wound that is deep, dirty, or difficult to clean deserves same-day medical advice even when the person feels well. Do not wait for redness or fever, because tetanus may present through muscle symptoms rather than a dramatic wound.

Ask whether your vaccination record is complete, whether this wound needs a booster or other prevention, how to care for it, and which muscle symptoms should trigger emergency help.