@RichardfromSyd1 @OrinCordus @Bertrandization @djf0001 you fellas know much about rate ratios? Does a rate…

@RichardfromSyd1 @OrinCordus @Bertrandization @djf0001 you fellas know much about rate ratios? Does a rate ratio of 7 (for example) in the graph below mean a person is 7 times more likely to be hospitalised or die from Covid than somebody without Covid? https://t.co/Xnj8MncpKj

Ah: "Compared with at 2–3 weeks after the second dose, rate ratios for severe COVID-19 at 18–19 weeks were 5·43 (95% CI 4·00–7·38) in Scotland and 4·71 (3·83–5·78) in Brazil." So denominator is earlier immunity from 2 x AZ.

Had meant to include you @longfacehorse

"...pattern of findings across the two countries, with differing variants of concern and temporal trends in infection rates, suggests that vaccine waning is a key driver for the increasing numbers of severe outcomes being seen in two-dose ChAdOx1 nCoV-19 vaccinated individuals."