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Causes

By Mayo Clinic staff

The bacteria that cause tetanus, Clostridium tetani, are found in soil, dust and animal feces. When they enter a deep flesh wound, spores of the bacteria may produce a powerful toxin, tetanospasmin, which acts on various areas of your nervous system. The effect of the toxin on your nerves can cause muscle stiffness and spasms — the major signs of tetanus.

DS00227

Sept. 20, 2008

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