| smallpox vaccine | 7.31 | Stocks of smallpox vaccine have to be refrigerated. | ||
| smallpox virus | 4.67 | The smallpox virus cannot grow in mice. | ||
| smallpox attack | 1.32 | How likely is a smallpox attack? | ||
| smallpox vaccination | 1.05 | The scarcity of VIG is a major factor weighing against mass smallpox vaccination. | ||
| smallpox outbreak | 0.99 | In a smallpox outbreak, patients would presumably be treated in isolated facilities. | ||
| smallpox epidemic | 0.86 | It would be administered to the public in the event of a smallpox epidemic. | ||
| smallpox case | 0.53 | Even doctors who have seen smallpox cases have been wrong. | ||
| smallpox stock | 0.46 | Russia, the only other nation known to retain smallpox stocks, has opposed their destruction. | ||
| smallpox campaign | 0.39 | Because of his leadership in the smallpox campaign, Foege was named director of the CDC. | ||
| smallpox expert | 0.33 | A cadre of CDC smallpox experts rushed to put together the manual in the last two weeks. | ||
| smallpox lesion | 0.26 | The stockpile includes dried scabs that fall from smallpox lesions. | ||
| smallpox threat | 0.26 | Was there a sudden smallpox threat? | ||
| smallpox weapon | 0.26 | Among other things, the report said that North Korea, a former ally, was working on smallpox weapons. |