What are scientists doing or using smallpox for?

Smallpox has been eradicated, meaning that no known natural reservoirs of the smallpox virus exist. Therefore, scientists do not handle or do research using smallpox. Scientists may study historical samples of the smallpox virus for research purposes with appropriate safety precautions and approvals from relevant authorities. They do not intentionally create or spread the virus. There might also be ongoing surveillance by governments or organizations like the World Health Organization to maintain awareness about potential threats but with extreme precautions and guidelines in place.