Microfilaria occurs in peripheral blood of human beings during

Options

A. Morning
B. Evening
C. Night
D. Day time

Answer

**Step-by-Step Solution:**

1. **Understanding Microfilaria**: Microfilaria is the larval stage of a parasitic worm, specifically associated with the genus Wuchereria, which is responsible for causing lymphatic filariasis in humans.

2. **Identifying the Disease**: The disease caused by Wuchereria is known as lymphatic filariasis. This disease is characterized by symptoms such as swelling of the lymph nodes and other related complications.

3. **Timing of Occurrence**: Microfilaria is known to be present in the peripheral blood of infected individuals at specific times. Research indicates that this presence is primarily during the night.

4. **Specific Time Frame**: The peak occurrence of microfilaria in the blood is typically between 10 p.m. and 2 a.m. During this time, the larvae can be detected in the bloodstream.

5. **Daytime Disappearance**: It is important to note that during the daytime, microfilaria levels drop significantly, and they may not be detectable in the peripheral blood.

6. **Conclusion**: Based on the information gathered, the correct answer to the question is that microfilaria occurs in the peripheral blood of human beings during the night time.

**Final Answer**: Microfilaria occurs in the peripheral blood of human beings during the night time.

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