So that would contradict this statement from the same report: "With the delta variant, vaccine effectiveness against infection has been estimated at around 65% with Vaxzevria and 80% with Comirnaty (4)."
The footnote under that table also says "Comparing case rates among vaccinated and unvaccinated populations should not be used to estimate vaccine effectiveness against COVID-19 infection."
Edit: it would also be difficult to reconcile with the enormous disparity between <18 and subsequent rows.