Last weekend we went out of town. The looney bins who run the city have mandated that restaurant patrons show proof of vaccination. The place we ate at are big time Trump supporters but under the city's liberal dictator, they have to abide by this ridiculous mandate. As you all know, I'm unvaxxed. However, I just happen to have my results from the previous day. The owners obviously accepted that.
In all seriousness, my negative test results trump all vax cards. Vaxed people can have COVID and not even know it if they don't test regularly. By the time they experience symptoms, they would've been spreading COVID.
I personally know vaxxed people who got COVID.