How Did We Get Our First Evidence of Smallpox?

The smallpox virus probably made the leap from domesticated animals or rodents as it turns out, about 10,000 years ago. Scientists aren't exactly sure which animal it came from, but it probably originated in the same place geographically that agriculture and livestock domestication took off. And we actually see our first physical evidence of smallpox from around 1500 to 1000 BC, what? In Egyptian mummies whose preserved skin shows telltale pockmarks from the disease.