Smallpox vaccination confers long lasting immunityBMJ 2003; 326 doi: https://doi.org/10.1136/bmj.326.7400.1164-d (Published 29 May 2003) Cite this as: BMJ 2003;326:1164
- Deborah Josefson
Immunity to smallpox after vaccination can be long lasting, suggests a study conducted by Oregon Health Sciences University researchers and presented at the meeting of the American Society for Microbiology in Washington, DC.
The finding will reassure people in the United States who are worried about bioterrorism, because it means that any attempt to induce a smallpox epidemic is likely to be of limited effect, as 95% of US citizens over the age of 35 years have been vaccinated against the virus.
Moreover, the finding may spur unvaccinated people to be vaccinated and reassure people who have opted not …