Israel: Pfizer vax now only 39% effective

At preventing infection and symptomatic illness according to their Ministry of Health. Their previous study two weeks ago noted 64% effectiveness. It still proves highly effective against hospitalization (92%) and and severe illness (91%). They also approved booster shots for the immunocompromised. While Delta is much more contagious than other strains, there is no data in the link about that with vaccination. If those vaxxed can get infected it's reasonable to speculate they could also be contagious.