How does a tetanus get energy?

Tetanus, specifically the bacterium Clostridium tetani, derives energy through anaerobic respiration. It ferments organic compounds, primarily carbohydrates, in environments lacking oxygen, producing energy in the form of ATP. The byproducts of this fermentation process include toxins, which contribute to the symptoms associated with tetanus infection. Thus, the bacterium thrives in oxygen-poor environments, such as deep puncture wounds.