@Aster It depends on the particular vaccination. Some are given in a series and given rather close together. Like I think Hep B is a two part series? I am not sure. Others a few years apart. Some a ten years booster is given.
For some of the diseases you can test your immunity. I get my tetanus tested. It’s called a tetanus titer. I had my last tetanus vaccination over 15 years ago and my titer (immunity) is still very high. My mom it has been over 25 years and she still tests immune, my husband about 15 years and his titer also is well above what is necessary to be immune. The thing is, pertussis is thought to wane in immunity quickly, and the only way to get a pertussis vaccine right now is with the combination tetanus vaccine.
However, we still have pretty good pertussis immunity in our population, because of the vaccine. We see outbreaks of it, but it is still relatively rare, it is definitely worth it to continue to vaccinate the population, especially children for that disease. My guess is many adults have not maintained their pertussis boosters, because most don’t get a regular tetanus and pertussis booster is my assumption. Even if someone knows to get a tetanus booster, their doctor might not be giving them the combination.
I also have had my rubella checked fairly recently and my titer is well within being immune, and I have not been vaccinated for that since my MMR as a child. I don’t know if it is common for immunity to stay high for many years for rubella, I only know my own numbers.
I think they believe the HPV vaccine needs to be boosted. I’m not up to date on that information either. Basically, I know general stuff, and for specifics you might want to consult Johns Hopkins websïte, they have a good vaccine pace or the CDC recommendations.
There was a recent report of some Amish going on some mission trip to Asia somewhere where there was a measles outbreak. I guess this group of Amish (maybe all Amish?) don’t vaccinate, and of course many of them got sick and then they boarded a plane and got others sick. Like I said before measles is ridiculously contagious. In my opinion that really was a lack of consideration for the greater population for them to get on a plane until they knew all of them were in the clear. At minimum they should have been wearing masks to protect others, but really on a long plane ride it is such an incubator. I think once home they spread it to others in their community in Ohio. I didn’t read about it, my mom just told me a couple of days ago.