Belgium, compared to sept 2nd 2020:
Cases: 5x
Deaths: 2x
Hospitalizations: 2.5x
ICU: 2.5x
Tiny compared to winter? Yes. But this is a seasonal respiratory virus and this season is worse than last year same time.
Now, the theory is you can go back to normal, massively increase viral doses in the air, and not see a rise through winter. Because of immunity. But, breakthroughs seem to happen more easily at high viral doses.
The other thing is, antibodies wane. Israel had to do boosters, they found greater susceptibility the further people got from their vax date. Boosters have reversed severe disease trends for now, and is optimistic. But they also have restrictions.
I don’t know which way the future goes. My point is just that it is terribly premature to declare victory over a respiratory virus in summer. Europe made exactly the same mistake last year. You won’t know till winter.
The other thing people forget is that efficacy is a relative measure, but hospitalizations are absolute. Ok, so, 95% efficacy in reducing hospitalizations compared to unvaccinated. Great! I got the vaccines myself, but that is a great result.
So, on absolute terms, you have 20x less risk of hospitalization from the wild type variant at case levels at a given point.
But….Delta is associated with a 2x increase in hosp risk compared to wild type. Oops ok so we have only a 10x absolute reduction in hospitalization risk.
And cases are 5x higher than this time last year. Oops, ok, compared to sept 2nd 2020 a vaccinated Belgian has only a 2x absolute reduced risk of hospitalization compared to same time last year. (An unvaccinated Belgian with no prior infection has a 10x higher risk, efficacy vs severe disease still 95%)
If cases go high enough you still see severe disease, even with vaccines. Maybe impossible for cases to hit 100,000 a day in Belgium, 5x winter peak. But Israel already 60% higher than winter peak, in summer, with boosters, and restrictions. So what happens without restrictions, in winter? (I’m assuming Belgium will get boosters)