Write the causative agent of filariasis in human. Mention its mode of transmission and symptoms of the disease.

Explanation

### Step-by-Step Solution:

1. **Causative Agent of Filariasis**:
- The primary causative agent of filariasis in humans is **Wuchereria bancrofti**. Another species that can also cause filariasis is **Brugia malayi**.

2. **Mode of Transmission**:
- Filariasis is transmitted through the bite of infected **female mosquitoes**. The mosquitoes act as vectors, carrying the larvae of the filarial worms from one host to another.

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