I was born in 1962 and assumed I had only gotten one measles vax, so was planning to ask my doc at next week's appointment whether I should consider getting a booster.
But then I went looking and actually found my immunization record book my mom kept for me. (pardon my garden-dirty nails

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So I see that I had a measles vaccine in mid 1963 and then another ("Attenuax," had to look that up) in my early teens in 1975.
And I see I got a Rubella shot and a Mumps shot in different years, that must have been before they combined into MMR.
And I had no idea I'd gotten a Smallpox vax! I have no shoulder scar, so just assumed they had stopped giving them by the time I came along. I guess not.
I will bring this with me and ask the doc anyway but seeing as I had two shots I suspect I'll be told I don't need a booster.