In The Grauniad:
Noteworthy is Belgium with 74% fully vaccinated and one of the hardest-hit countries in the world, now at 79/100,000, currently 10th highest caseload globally. That alone tells us 74% isn’t enough, and that prior Covid (without vaccination, what some refer to as “natural immunity”) is unreliable for representing a solid immunity wall against the Delta variant. In fact, it has been projected for Delta that any country needs to achieve 90-95% of its total population fully vaccinated (or with recent Covid) in order to have population-level immunity that covers, providing relative protection, for the others.
Actually what it tells us is that the Pfizer vaccine, which is what Belgium overwhelmingly uses, does not stop the spread.
The CDC and Anthony Fauci have held since late in 2020 that the reproduction rate for COVID-19 of 2.5 means a 60% vaccination level should stop the pandemic.
The vaccines haven't done that.
The United States is 57.6% fully vaccinated to date, plus 13.9% who have survived infection to date, thus 71.5% "immune".
Yet here we are, into the sixth wave:
It's Eric Topol who is in denial.