[templar]

It's based on previous experience with DryVax by Wyeth during the 1970's.

You seem knowelegable about this. Could you explain to me why the reactions to the DryVax would be the same as the Smallpox vaccine? I keep remembering swine flu for some reason, when I think about this.

[bonesmccoy]

You may be confusing the vaccines. Swine flu is definitely different than cox pox (which is the virus in the small pox vaccine). Dryvax is a live virus, which is why the public health guys are concerned about side effects). DryVax is the small pox vaccine.