I can't find any source in there suggesting a lack of effectiveness. The underlying source linked by the article mentions a reduction of 80% in symptomatic dise

I can't find any source in there suggesting a lack of effectiveness. The underlying source linked by the article mentions a reduction of 80% in symptomatic disease, which is responsible for most transmission. I can't find anything very recent, but here's an analysis that takes Delta into account: https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/1001169/S1301_SPI-M-O_Summary_Roadmap_second_Step_4.2__1_.pdf?fbclid=IwAR2UWZ6fhhJHGWNN4vq5NeuIX91DhhV6RXycOJhDtSUoPPRLv0F3dnGrG8E https://assets.publishing.service.gov.uk/government/uploads/... Finding 80+% protection against symptomatic disease and ~40% reduction in onwards transmission, from three different modelling groups.