Tetanus can interfere with breathing and may be life-threatening. Which statement best reflects this risk?

Tetanus can interfere with breathing and may be life-threatening. Which statement best reflects this risk?

• A. It is caused by a virus
• B. It is not preventable by vaccination
• C. It can interfere with breathing due to toxin effects
• D. It only occurs in children

Answer: (C)

The key idea is that the danger of tetanus to breathing comes from the toxin it produces, not from an infection of the nerves directly. The tetanus toxin cripples the nervous system by blocking the release of inhibitory neurotransmitters (like GABA and glycine) in the spinal cord and brainstem. Without these brakes, muscles contract uncontrollably and become rigid. When the muscles that control the chest wall and the diaphragm are affected, breathing becomes difficult or impossible, making it life-threatening. Tetanus is caused by a bacterium, not a virus, and it is preventable through vaccination, which trains the immune system to neutralize the toxin before it can cause these effects. It can affect people of all ages, not just children. Therefore, the statement that best reflects the risk is that tetanus can interfere with breathing due to the toxin’s effects on nerve signaling and muscle control.

The key idea is that the danger of tetanus to breathing comes from the toxin it produces, not from an infection of the nerves directly. The tetanus toxin cripples the nervous system by blocking the release of inhibitory neurotransmitters (like GABA and glycine) in the spinal cord and brainstem. Without these brakes, muscles contract uncontrollably and become rigid. When the muscles that control the chest wall and the diaphragm are affected, breathing becomes difficult or impossible, making it life-threatening.

Tetanus is caused by a bacterium, not a virus, and it is preventable through vaccination, which trains the immune system to neutralize the toxin before it can cause these effects. It can affect people of all ages, not just children. Therefore, the statement that best reflects the risk is that tetanus can interfere with breathing due to the toxin’s effects on nerve signaling and muscle control.