I did get a vaccination about two weeks before I had my first experience with numbness in April of 2006. I had an MMR vaccine because the mumps were going around Nebraska and Iowa at near epidemic proportions.

Two weeks later, my right thigh went numb while on a trip to the Omaha Zoo. (boyfriend and I got to ride in the engine of the steam powered train that is at the zoo) Stood right behind the firebox where they burn the wood/coal, and it was a fairly warm day for April. It was really hot riding on that engine. After I got off the train (practically fell off, feet felt weird) I realized my right thigh and hip were numb. Got home and was in serious pain in the thigh. (apparently sprained it or something when I fell off the train...actually fell twice, getting on, and getting off)

I do think that MMR vaccine had something to do with the MS. I think I already had the MS, but the vaccine might have triggered an exacerbation.