Ha! 86% of adults have at least one shot in UK.
Maybe that result above referred to all, including children.
Nope, it’s adults!
Noted though that the data is from June 14, and there is a few weeks of delay in the body producing antibodies ( “It takes between two and three weeks after infection or vaccination for the body to make enough antibodies to fight the infection.”
So, looking at the adult vax rate from about 6 weeks ago = about 70%,
gives what I was looking for- an increase of “some” immunity of about 2/7ths above the vax rate.