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It was a study from Scotland of 100k+ people looking at the efficacy of the Pfizer and AZ vaccines in combating the alpha and delta variants. There hasn't been sufficient time since the emergence of the delta variant to look at efficacies in combating "severe" infections.
Absolute case numbers are best examined using a moving average because of reporting delays/snags. To assess emerging trends most localities look at the 7-day moving average.
I'd say we are around 6 weeks/a month behind the UK here but our epi models indicate a third wave.