Prof Andrew Pollard, Oxford vaccine team

Clear that the delta variant can infect people already vaccinated

Making herd immunity impossible to reach even with high vaccine uptake

Anyone who is still unvaccinated will, at some point, meet the virus.
We don't have anything that will stop transmission,
so I think we are in a situation where herd immunity is not a possibility
and I suspect the virus will throw up a new variant that is even better at infecting vaccinated individuals
Angela Merkel

Ending free testing from Oct 11