Entamoeba hystolitica is transmitted through

Options

A. insect bite
B. bird dropping
C. improperly cooked pork meat.
D. food or water contaminated with cysts

Answer

**Step-by-Step Solution:**

1. **Identify the Organism**: The question refers to *Entamoeba histolytica*, which is a protozoan parasite.

2. **Understand the Disease**: *Entamoeba histolytica* is known to cause amoebiasis or amoebic dysentery in humans.

3. **Recognize Symptoms**: The disease is characterized by symptoms such as persistent diarrhea, abdominal pain, nausea, and vomiting.

4. **Determine Transmission Mode**: The primary mode of transmission for *Entamoeba histolytica* is through contaminated food or water.

5. **Identify the Contaminant**: The food or water is specifically contaminated with cysts of *Entamoeba histolytica*. These cysts are quadrenucleate, meaning they contain four nuclei.

6. **Evaluate the Options**:
- Insect bite: Incorrect
- Bird dropping: Incorrect
- Improperly cooked pork meat: Incorrect
- Food or water contaminated with cyst: Correct

7. **Final Answer**: Therefore, the correct answer is that *Entamoeba histolytica* is transmitted through food or water contaminated with cysts.

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