You are right Joe… I will never know. I spent 10 days in California with no masks… distancing or hand sanitizer, and I lived to talk about it. We just got word last night that our next door neighbor in Florida is in hospital in New York with covid. They are ANAL about covid. They were the first to get their shots … more masks when no one else was. Etc …etc. They drove to NY to be with family. They said they are very careful travelling and follow all safety precautions. They just can’t believe he got it in the first place. Only him. Not her … or their son and DIL or grandkids (And they are all fully vaxxed). They got vaxxed in March. Maybe it’s wearing off already. 6-8 months is about right … then it’s booster time !!