Bacillary dysentery is due to:

Options

A. Salmonella
B. Shigella
C. Proteus
D. Entamoeba

Answer

### Step-by-Step Solution:

1. **Understanding Bacillary Dysentery**: Bacillary dysentery is an intestinal infection characterized by diarrhea, which can be severe and may contain blood or mucus. It is important to identify the causative agent of this condition.

2. **Analyzing the Options**:
- **Salmonella**: This group of bacteria is primarily known for causing typhoid fever and foodborne illnesses, not bacillary dysentery.
- **Shigella**: This group of bacteria is specifically known for causing bacillary dysentery (also known as shigellosis). It leads to inflammation of the intestines and can result in severe diarrhea.
- **Proteus**: This genus of bacteria is mainly associated with urinary tract infections and does not cause bacillary dysentery.
- **Entamoeba**: While Entamoeba histolytica can cause dysentery, it is classified as amoebic dysentery, not bacillary dysentery.

3. **Identifying the Correct Answer**: Based on the analysis, the organism responsible for bacillary dysentery is **Shigella**.

4. **Conclusion**: Therefore, the correct answer to the question "Bacillary dysentery is due to:" is **Shigella**.