1.   A study in the journal Nature reviewing smallpox outbreaks from the last three centuries suggests the rate of infection would fall as the disease is diagnosed and treated.

2.   But some medical experts call for a national dialogue on the best way to prepare for a possible smallpox outbreak that was spread by terrorists.

3.   In a smallpox outbreak, patients would presumably be treated in isolated facilities.

4.   It says its contingency plans for dealing with a smallpox outbreak, which will be reviewed this month, assume that no one is immune anyway.

5.   Sent to states about two weeks ago, the program outlines steps that local government and health planners can take to contain a smallpox outbreak.

6.   Smallpox vaccine, they say, should be used only in the event of a smallpox outbreak.

7.   The CDC has said it planned to control any new smallpox outbreak by using the ring vaccination method it used to eradicate smallpox.

8.   The CDC has vaccinated several teams of experts who could respond quickly to any smallpox outbreak.

9.   The selective targeting approach he pioneered to end the smallpox outbreak was a success.

10.   The workers would be part of teams designated to investigate the initial cases in a smallpox outbreak and to directly care for victims.