11.   But killed-virus smallpox vaccines have been tested only in animals.

12.   But many of the projects, like the manufacture of a smallpox vaccine, are years from completion.

13.   By that time, there may be adequate supplies of smallpox vaccine to inoculate everyone in the United States.

14.   By the end of this year, enough smallpox vaccine to protect the entire country also will be included.

15.   Compounding the woes, the agency also found that existing stocks of smallpox vaccine had been so poorly stored that two-thirds of them were useless.

16.   Current recommendations limit smallpox vaccine to scientists working with smallpox and related viruses in a laboratory.

17.   Drug industry experts and federal health officials say it is possible for drug companies to make the smallpox vaccine within a year.

18.   Efforts are under way to increase inventories of smallpox vaccines.

19.   Even when given to healthy people, smallpox vaccines infrequently produce dangerous reactions because the vaccine uses a live vaccinia virus, which is similar to smallpox.

20.   Even so, many individuals would surely want the protection if smallpox vaccine were offered.