@icdtap
If the person with concerns is vaccinated they are protected so it is irrelevant whether visitors to their home have been vaccinated or not. Once you are vaccinated you have protection.
You do, but it’s not a cast-iron guarantee, is it? In the trials, no-one in the vaccination group was hospitalised or died - but in the real world, with larger numbers of people, there will be some hospitalisations and deaths among vaccinated people. Israeli data showed 97% of Covid deaths in the previous 30 days among unvaccinated.... which means 3% were among vaccinated. Recent BBC report on data showing that one dose of either Pfizer or Astra Zeneca reduced hospitalisations by 80% in the over 80’s.
So, for the sake of argument - let’s assume you are one of the 3% (or 5%, or 20% - we don’t know for sure) who will still catch Covid and be severely ill after vaccination. The thing is - you don’t know whether you are in that group or not, you just have a rough idea of probability. So if you are in a vulnerable group through age or medical conditions, who would you prefer to have visit you - an unvaccinated person (who probably won’t be carrying the virus, but you never know), or a vaccinated person, who is approximately 1/3 as likely to be carrying the virus as the unvaccinated person?
Now if the visitors we’re talking about are your grandchildren who you haven’t seen for a year, many people will take the risk because the benefit to them is perceived as much greater. But if it’s a tradesperson coming to do a job, or a somewhat casual friend, some people would prefer to choose a vaccinated tradesperson, or meet the friend out of doors.
I won’t make this choice for myself, because I have had Covid, was not severely ill, and therefore am comfortable that even if I caught it again it would not be dangerous to me (at least until I’m a lot older). I am however CV - in fact, recently upgraded to CEV. Had I not already had Covid, I would probably be quite anxious, and yes, I would be avoiding unvaccinated people as much as possible.