Do you realize that the the smallpox vaccines being given to our are little different from the ones used since the 1870s? That is three decades older than the Model T Ford. Ford couldn't build a new Model T today to sell to the public even if it wanted to. It doesn't meet any of the modern emissions and safety standards that modern cars are required to pass. Don't you think there's been at least as much progress in immunology in the last century as there has been in manufacturing? Why shouldn't Americans in the 21st century expect higher standards for vaccines than we had a few decades ago? We certainly have them for just about every other product available on the market.
In fact the Germans developed a much safer vaccine in the 1960s. It has not been proved effective against smallpox in endemic areas due to the erradication of smallpox, but it has been shown to be effective in protecting people in high risk groups from serious side effects of the standard vaccine.
Here are a few links to some of my previous posts on this subject.
I want to try the vaccine, I am just in a high risk group with ezcema and allergies to drugs.
How so? Dryvax is pretty much the same as it was back then, and the diluted form is what they are planning for mass inoculations.