It's fairly common for countries to require vaccinations simply to enter them as well. For example, I've personally gotten the yellow fever vaccine, which is re

It's fairly common for countries to require vaccinations simply to enter them as well. For example, I've personally gotten the yellow fever vaccine, which is required to enter Kenya. That vaccine is actually relatively risky. Yellow fever is a serious disease, and the vaccine from weakened - but not killed - yellow fever virus. Thus very occasionally it causes what's basically yellow fever. That's still much safer than the risk of getting yellow fever if you are visiting a place like Kenya. But at least where I live, doctors won't give it to you without confirming where exactly you are travelling, because the otherwise the risk/benefit tradeoff isn't worth it.