I dunno man, my 85 year old father went from playing blues shows at a bar twice a week to using a walker and living in assisted housing very quickly. I went to his last show on January 17 of this year and I signed him into the housing program on February 3. Around January 25 he just woke up one morning and couldn't get out of bed and his mind which was normally sharp was muddy. He never got a vaccine and never had covid.