Name the causal organism of chickenpox. Mention two important symptoms.

Explanation

**Step-by-Step Solution:**

1. **Identify the Causal Organism:**
- Chickenpox is caused by a virus known as the **Herpes Zoster virus**. This virus is also referred to as the varicella-zoster virus.

2. **List Two Important Symptoms:**
- The first important symptom of chickenpox is the appearance of **red spots** on the skin.
- The second important symptom is the development of **blisters** that can be itchy and painful.
...