Pregnant women are vaccinated for tetanus. Give reason.

Explanation

### Step-by-Step Solution:

1. **Understanding Tetanus**: Tetanus is a serious bacterial disease caused by the bacterium *Clostridium tetani*. It is known to be life-threatening.

2. **Mode of Entry**: The bacteria can easily enter the body through open wounds, cuts, or injuries. This makes individuals, especially pregnant women, vulnerable.

3. **Toxin Production**: Once the bacteria enter the body, they produce a toxin that affects the nervous system. This can lead to severe complications, including death.

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