Early vaccine technology was not developed by drug companies or even western medicine, but by mostly older women healers in the Ottoman Empire (what is now turkey), a group of women MDC people might find interesting. Lady Montagu observed their technique for small pox vaccination in the early 1700's and tried to rally other upper class English women to vaccinate their children as she had. The letter is the 4th down on this link if you want to read it. http://www.ic.arizona.edu/ic/mcbride/ws200/montltrs.htm. I would be curious if someone knows of an older source.
I decided to repost this here in case anyone was interested.