All I can say is read the insert for the ingredients. Everyone uses the smallpox argument because it was a successful campaign to rid the world of a horrible disease. That campaign also started in the late 1700's to the early 1800's. They don't even give the smallpox vaccine anymore.

The argument is kind of moot at this point. Does a modern smallpox vaccine have any of those poisons? Probably but I don't know for sure. I do know at some point along the way it switched to a different kind of virus away from cowpox. I would need to go back and read all that research again. Sorry my memory is not what it used to be.