When was the last case of smallpox reported in the United States?
Smallpox infection was eliminated from the world in 1977.

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1. What is smallpox?
2. When was the last case of smallpox reported in the United States?
3. What is the incubation period for smallpox?
4. What are the symptoms of smallpox?
5. How is smallpox spread?
6. Is a smallpox vaccine available?
7. Is there a treatment for smallpox?