New study indicates smallpox vaccination effective for decades

(Elsevier Health Sciences) There is concern that bioterrorists might obtain smallpox from a laboratory and release it into the population. In a study published in the December 2008 issue of the American Journal of , researchers found that lifetime protection is obtained from just one vaccination, even when that vaccination occurred as much as 88 years ago. They conclude that in the event of a smallpox bioterrorist attack, vaccinia smallpox vaccine should be used first on individuals who have not been vaccinated previously.


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