Ahem! Reading through this and happening to watch a PBS special on the polio vaccine reminded me of something else...
I have had 5 smallpox vaccinations. I have had both the Sabin and the Salk polio stuff. Twice. Each. I have had every shot known to man and most of them more than twice.
Wonder how I did that? My Dad was in the service for 38 years. Every time we were shipped overseas or returned overseas after a visit home back in the 60s, we spent a week getting shots.
I have my records from when I was a kid (not easy to find when you are a service brat!) and when I showed them to my doc, he was shocked at how many vaccines and preventative shots I had. He said it's no wonder my immune system seems to kill everything that I get within a day or two!
Too bad it didn't kill the MS!