Yes I know, it was clear early on. The study also says:
>Although vaccines remain highly effective at preventing severe disease and deaths from COVID-19, our findings suggest that vaccination is not sufficient to prevent transmission of the delta variant in household settings with prolonged exposures.
Which is what we're talking about here, preventing serious cases.
>Although vaccines remain highly effective at preventing severe disease and deaths from COVID-19, our findings suggest that vaccination is not sufficient to prevent transmission of the delta variant in household settings with prolonged exposures.
Which is what we're talking about here, preventing serious cases.