Filariform larva enters human body while

Options

A. Drinking contaminated water
B. Eating contaminated food
C. Bathing in contaminated water
D. Walking bare footed

Answer

### Step-by-Step Solution:

1. **Understanding Filariform Larva**:
- The filariform larva is associated with filarial worms, specifically species like Wuchereria bancrofti and Wuchereria malayi, which are known to cause diseases such as elephantiasis.

**Hint**: Identify the type of organism and its associated diseases.

2. **Transmission Method**:
- Filariform larvae enter the human body through a vector, which in this case is primarily certain species of Culex mosquitoes. These mosquitoes act as carriers for the larvae.

**Hint**: Consider how parasites typically enter the human body and the role of vectors.

3. **Lifecycle of Filarial Worms**:
- The filarial worms reproduce viviparously, meaning they give birth to live young called microfilariae. These microfilariae circulate in the human body and eventually develop into adult worms in the lymphatic system.

**Hint**: Review the lifecycle stages of the organism and how they interact with the host.

4. **Entry Point into Human Body**:
- The filariform larva penetrates the human body through the skin, particularly when individuals walk barefoot on contaminated soil or surfaces where the larvae are present.

**Hint**: Think about common ways that larvae can penetrate the skin.

5. **Conclusion**:
- The correct answer to the question is that the filariform larva enters the human body through the skin, particularly when walking barefoot.

**Hint**: Summarize the main points to confirm the answer.

### Final Answer:
The filariform larva enters the human body through the skin, especially when individuals walk barefoot.