It's been proven time and again that vaccines can cause epidemics. There are many articles on old folks homes, long term care homes, etc. who claim to have had their WORST month, death-wise, shortly AFTER most if not all residents/staff got the covid shots. That being said, if the person who got the shot is feeling ok, doesn't have any symptoms, I personally wouldn't be too worried hanging around them. There's so many unknowns though, so if these shots are a danger to even an unvaccinated person's body/mind/spirit, just from being around the vaccinated, and we have to segregate completely to survive... well, that would be beyond bad.