Name the scientists .
Discovery of smallpox vaccine: ______

Explanation

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks for the name of the scientist who discovered the smallpox vaccine.

2. **Historical Context**: Smallpox was a dangerous and chronic disease that affected many people, causing severe health issues and even death.

3. **Identifying the Scientist**: The scientist who is credited with the discovery of the smallpox vaccine is Edward Jenner.

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