Hello,
Would you like to send your husband to me and my husband who have suffered from long covid now since May, and does he really want a description of what this has done to our bodies and our lives, at one point we lay together waiting to DIE , we are mid to late fifties, so not 'Old' .
I would counsel you to make your own decisions about a vaccine, it has a way to go yet, but nearer the time of roll out you could privately speak to your GP about your concerns. Your husband is dangerous, not only to himself but to others. Oh covid exists alright, tell him to ask the two wives of the men who have died from it at my husband's place of work last week.
Maybe your husband should put his money where his mouth is and agree to be injected with covid to further medical research, after all, if it doesn't exist, he has nothing to worry about. I feel sorry for you as you are caught up in his idiocy, I'm sorry to be harsh, but you must trust your own instincts and be as careful as you can be.