Who are typhoid carrier?

Explanation

### Step-by-Step Solution:

1. **Understanding Typhoid Fever**:
- Typhoid fever is a bacterial disease caused by the bacterium *Salmonella typhi*. It primarily affects the small intestine.

2. **Transmission of the Bacteria**:
- The bacteria enter the human body through contaminated food and water. This means that if food or water is tainted with *Salmonella typhi*, it can lead to infection.

...