Scientists have known for years that measles can alter the immune system – but the latest evidence suggests it's less of a mild tweaking, and more of a total reset.
So, even if you had been immune, through previous illness, vaccination or via maternal milk, you may not be anymore after having measles.
I had never heard this until today, and it's an absolutely horrifying thought.
If your physician pushes back on providing a measles booster - mine did because we aren’t having a local outbreak currently - you can get an MMR vaccine (as well as most any other vaccine in production) at any travel vaccine center.