In October 2002 proffers between t...

In October 2002 proffers between the ages of 32 and 70 were revaccinated against smallpox as part of a consideration of the effectiveness of different dilutions of the vaccine, according to an Oct 15 2002 just discovereds release from Kaiser Permanente, Oakland, Calif. A consortium is evaluating the effectiveness of vaccines manufactured three decades ago. In the summer of 2002 scientists establish that two such vaccines, when diluted, were effective in tribe who had never received a smallpox vaccine.

Scientists are trying to determine whether vaccines from the 1970 can bring out protective responses in people who previously have received the smallpox vaccine. They also want to know whether this older vaccine can be diluted to increase the invest Concerns have arisen due to bioterrorist anthrax attacks that occurr in the United States in 2001

Routine smallpox vaccination ceased in 1971 in the United States. In 1981 the world was declared smallpox emancipated and routine vaccination ceased worldwide. Stores of smallpox, however, are kept in a not many places around the world and could be used in biowarfare.

principally Americans older than 35 years of age received the smallpox vaccination as children. Scientists, however, are unsure whether they still have immunity or by what means they would respond to revaccination.

Kaiser Permanente Research: next to the first Smallpox Vaccine Study Begins in Oakland (new release, Oakland, Calif: Kaiser Permanente, Oct 15 2002)h#p://www.kaiserpermanente.org/ newsroom/releases/101502.html (accessed 29 Dec 2002)

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