>All of a sudden, an outbreak occurs, putting all the immuno-compromised at risk... I mentioned the issue of being a single US traveler (that got vaccinated) g

>All of a sudden, an outbreak occurs, putting all the immuno-compromised at risk... I mentioned the issue of being a single US traveler (that got vaccinated) going to a foreign country without vaccinations. It's a single person in the middle of everyone else. How does the vaccine protect one person in millions (US traveler) but in the US a few unvaccinated kids put lots of people at risk?