"Immunization data for COVID-19 are dependent on clinician report of status to ImmTrac2."

I'm a Texas physician and I've never even heard of "ImmTrac2" so I'm guessing that the vast majority of vaxed or partially vaxed folks were not reported and thus put in the unvaxed category. This would obviously skew the numbers in favor of the unvaxed being hit harder by Covid.

It's not hard to figure out why this "study" is not in a peer-reviewed journal. ;)