How to deal with a vaccinated family member

Well, I guess that all depends on what you mean by seemingly needing to “eliminate risk”. The vast majority of people aren’t infectious. If we take testing positive as a sign of being infectious, the Pfizer vaccine knock that down by over half with one dose.

Eta: I assume we’re about the same age, 50ish. Unless you’re morbidly obese, we’re probably not far apart risk wise.