Transmission of Salmonella typhi" through:-

Answer

### Step-by-Step Solution:

1. **Identify the Pathogen**: Recognize that the question pertains to "Salmonella typhi," which is a bacterium responsible for causing typhoid fever.

2. **Understand the Transmission Routes**:
- Salmonella typhi is primarily transmitted through contaminated food and water.
- It can also spread through person-to-person contact, especially in areas with poor sanitation.

3. **Sewage Contamination**:
- The most common transmission route is through sewage contamination. This occurs when food or water is contaminated with fecal matter that contains the bacteria.
- This can happen in areas where sanitation practices are inadequate, leading to the bacteria entering the food or water supply.

4. **Symptoms of Typhoid**:
- While the question focuses on transmission, it is also important to note that typhoid fever presents with symptoms such as fever, general ill feeling, and abdominal pain.

5. **Conclusion**:
- Therefore, the primary mode of transmission for Salmonella typhi is through sewage contamination of food or water.

### Final Answer:
Salmonella typhi is transmitted primarily through sewage contamination of food or water.

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