primary host of taenia solium is

Options

A. Snail
B. pig
C. Cattle
D. Human

Answer

**Step-by-Step Solution:**

1. **Understanding Taenia solium**: Taenia solium is commonly known as the pork tapeworm. It is a type of flatworm that belongs to the phylum Platyhelminthes.

2. **Life Cycle of Taenia solium**: This organism is a diagenetic parasite, meaning it requires two hosts to complete its life cycle.

3. **Identifying the Hosts**:
- **Primary (Definitive) Host**: The primary host is where the adult form of the tapeworm resides and reproduces. For Taenia solium, the primary host is humans.
- **Secondary (Intermediate) Host**: The secondary host is where the larval stage develops. For Taenia solium, the secondary host is pigs.

4. **Transmission**: In humans, infection occurs through the consumption of undercooked or raw pork containing cysts of the tapeworm. In pigs, the infection can occur through the ingestion of food contaminated with human feces.

5. **Conclusion**: Based on the above information, the primary host of Taenia solium is humans.

**Final Answer**: The primary host of Taenia solium is **humans**.

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