Worms causing disease elephantiasis is ______ .

Explanation

**Step-by-Step Solution:**

1. **Identify the Disease**: The question asks about the worm that causes the disease known as elephantiasis.

2. **Recognize the Causative Agent**: The specific worm responsible for elephantiasis is known scientifically.

3. **Scientific Name**: The scientific name of the worm causing elephantiasis is *Wuchereria bancrofti*.

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