Can smallpox ever come back?

Related questions

1. Why are rabies victims afraid of water?
2. What if smallpox came back?
3. How long does it take for rabies to kill you?
4. What was the shot that left a scar on your arm?
5. Is smallpox curable?
6. Can you vaccinate against Ebola?
7. What ever happened to Ebola?
8. What is the first sign of Ebola?
9. How long does it take for the Ebola virus to kill you?
10. Is Rabies always fatal in humans?

Tags

1. #single
2. #spread
3. #public
4. #would
5. #accidentally
6. #unlikely
7. #disease
8. #magnified
9. #virus
10. #released
11. #smallpox
12. #discovery
13. #general
14. #population
15. #experts
16. #could