Family of 8 caught COVID Christmas Day…not on the same time.

Started with Grandma…fully vaxed, no booster. She had bad head cold, insisted is was just sinus….WRONG! That was on Wednesday before Christmas. Then Christmas night 2 others, unvaxed, severe headache. The one 50 yo severe vomiting fever 103 chills sweats. Rapid tests confirmed COVID. Next day 23 yo fully vaxed - booster. Same severe symptoms as 50 yr old. Confirmed COVID. My sister and I down for a day just tired…unvaxed. Well, I had one shot, she’s unvaxed had Covid before.
Husband fully vaxed…nothing. We are in Central Louisiana and EVERYONE IS GETTING IT. Walmart is closed till the 3rd, 42 ppl with COVID and closed for cleaning. Just letting y’all know.