Anti-vax and free riding, page-194

Here is the conclusion of what the study actually says:

"Conclusions and Relevance This cohort study found that full vaccination was associated with reduced risk of COVID-19 breakthrough infection, regardless of the immune status of patients. Despite full vaccination, persons with immune dysfunction had substantially higher risk for COVID-19 breakthrough infection than those without such a condition. For persons with immune dysfunction, continued use of nonpharmaceutical interventions (eg, mask wearing) and alternative vaccine strategies (eg, additional doses or immunogenicity testing) are recommended even after full vaccination"

That is it .

Your mate is looking through the appendixes to find something that isnt there.

Show in that research it states what he thinks its states.