vinnyt77 Interesting study I’d not seen before, examining the impact of a variety of non pharmaceutical interventions during the second wave in Europe.
https://www.nature.com/articles/s41467-021-26013-4
Figure 2 towards the top of the page gives a clear and succinct view of the relative impact of different measures…
That is interesting, as far as I can tell, the effects didn’t seem that great.
Take the closing of nightclubs for instance.
Since January 2020 there have been 312,659 cases of covid in Berlin (I can’t find a breakdown between 2020 and 2021).
A reduction in the r-rate by 0.12 might have therefore reduced cases by 37,519 (crude calculation I’m aware considering timelines etc.).
Total covid infection fatality rate in Germany was about 0.5%, so that’s 188 deaths, of which 60% were vulnerable from pre-existing conditions, so that’s 75 non-vulnerable deaths which might have been prevented from nightclubs in Berlin being permanently closed over the course of 2 years. For some context about 50 people die per year in Berlin from a traffic accident.
There is also a fatal flaw in trying to draw conclusions from the analysis in nature as to ultimately how much certain restrictions would reduce the r-rate and ultimately help preventing cases and deaths - which is that lockdowns in a large part only kick the can down the road, mostly reducing the r-rate of transmission while the lockdowns are in place only for numbers to rebound once restrictions are lifted. We have seen this in the difference between Delta rates between the UK and Germany this winter for instance - whereby the UK which opened up more in the summer had its majority of Delta transmission then, whereas Germany which was slower in opening up have ultimately only caused the cases to have been delayed until winter.
One thing is for sure though, given the impact of lockdowns during the second wave appears to have been fairly minimal based on the nature article, even before covid passports/covid recovered/covid test restrictions that would drastically reduce the number of infected people entering large events, and the effects of vaccinations in reducing infection fatality rates even further (plus the reduced mortality from Omicron) - the likely effect from lockdowns this time round would be near enough zilch. The closing of nightclubs on their own would certainly have made no difference to anything.
The final interesting point worth noting from that nature study is that shutting down gastronomy was perceived to have exactly the same effect as shutting down nightclubs, yet in Berlin nightclubs have been forced to shut, while gastronomy has been allowed to remain open.
Covid infection fatality rates from Germany here:
https://www.medrxiv.org/content/10.1101/2021.07.06.21260105v1.full.pdf