Comment Not sure you're right (Score 1) 673
Yes, you can still get infected, but if you keep running into people who are infected with measles, you'll either get a full-blown case, a mild case, or a subclinical unnoticeable case.
97% chance you'll get a subclinical unnoticeable case. That means you GET measles, but the replication is quickly shut down by your immune system, which is primed to fight it. However, having just fought it, your immune system is EVEN MORE primed to fight it.
And measles in particular is so very, very contagious that if ANYONE near you has it, you're going to be exercising your immunity to it.
So, yeah, it's a "matter of time" until you get infected, but your infection is likely to be such that you don't even notice.
People who have such subclinical infections are probably very unlikely to spread the disease.
--PeterM