The veterans study is getting a lot of play in the media. The only really thing we can conclude is that there's a severe decline in the efficacy of all 3 unboosted vax (J&J being the most severe close to completely worthless) against symptomatic infection. The study didn't reach a conclusion on whether that decline is due to the Delta or because as the Israeli studies suggest the vaccine is declining in efficacy over time.
It's not enough to reach a conclusion, but it's another tick in favor that the vaccines (unless you are going to mandate boosters) won't get us to herd immunity, unless you are prepared to mandate boosters. As a policy matter we are rapidly heading to mandate boosters (and then the question is how long is boosted immunity going to be and if you are going to keep mandating it) or just accept this is going to keep spreading. As dad4 would point out, that leaves a substantial number of elderly that remain vulnerable (since efficacy in that age group against severe disease also seems to have declined), but the next best hope for that seems to be the boosters (which most first world countries seem to be doing but we don't yet have a lot of data for) and pills (which the health authorities at this point really need to fast track...why have those hearings been delayed as long as they have????)
As the Delta variant became the dominant strain of coronavirus across the United States, all three COVID-19 vaccines available to Americans lost some of their protective power, with vaccine efficacy among a large group of veterans dropping between 35% and 85%, according to a new study.
www.staradvertiser.com
A study of 780,000 veterans shows a dramatic decline in effectiveness for all three COVID-19 vaccines in use in the U.S.
www.latimes.com