--ACAM2000 is created in laboratories, not on a farm, so there's much less possibility of bacterial contamination in the production process. However, it's derived from Dryvax, and it's not clear it will have fewer side effects than the old vaccine, some vaccine experts said.--

http://www.lamegame.name author Daniel Vincent Kelley says:

It seems this is long over due, there having been no small pox observed since 1980, it's a wonder why the adults in 2003 were being 'vaccinated' against it in any case...

Daniel Vincent Kelley
Author of Health and Policy Analysis Blog:
www.lamegame.name