No, none of the originals were placebo-controlled. They were just a concoction of muck, and every vaccine since, is simply tested against the previous gunk or at least an adjuvant of some sort.
Two books to read: 
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No, none of the originals were placebo-controlled. They were just a concoction of muck, and every vaccine since, is simply tested against the previous gunk or at least an adjuvant of some sort.
Two books to read:
No replies yet.