Catching up on backlog of Sorry Anti-vaxxers: According to this obituary Brian died on July 22. He died of COVID. At least he leaves with a bit of redemption admitting that he was wrong and allowed his sister to spread the word.
He thought the pandemic was the PLANdemic, the conspiracy theory that this was all some kind of new world order plot to control everyone:
But he came to his senses, albeit too late:
Rest in peace, Brian.