My observations are that number of people in hospital seems to correspond with no of cases in general - but the latest wave seems to have had less of an impact on numbers in ventilation - hopefully because of lower severity?
As usual I will say that our perceptions of severity arent just about the evolution of the virus, but also very much the evolution of our population immunity picture.
eg 2nd Omicron wave happened in the context of further evolution of the number of unvaccinated people who hadnt yet caught the virus, vaccinated people who had already caught Covid before etc etc.
When it comes to hospital data and comparing numbers in hospital beds to numbers in mechanical ventilation beds, there are some other factors to consider too when it comes to 2nd Omicron wave compared to the first one. Probably the most obvious example is that in England where data is available, the proportion of 'incidental' hospital cases compared to those recorded as being in hospital primarily for Covid has been different in the 2nd Omicron wave compared to the first one. So I'm not surprised the ventilation bed figures didnt show the same height of peak this time. Here is the usual graph, which I havent posted for a while, which illustrates this point quite well:
Data actually goes up to May 10th despite what the axis labels say. Data is from the primary diagnoses supplement spreadsheet at
Statistics » COVID-19 Hospital Activity
Since I've posted that data, I suppose I should point out that I'd expect changes to the hospital infection control rules, in hospital testing regimes etc to have some effect of unknown magnitude on the 'incidental' hospital data these days and in future. But these changes didnt happen so long ago that they would have messed up the ability to compare 1st Omicron wave to 2nd Omicron wave in this data, this point is more about any comparisons we may want to make in future.
Also note that if we can still trust the ability to measure the number of 'primarily for cases' under the various new testing rules, and so can still right now fairly compare them to the levels seen in past years, we have finally reached a stage where the number of primary covid patients in hospital in England has fallen below a level its not fallen below since the Delta wave fully emerged.
As for what happens next and the possibility of decline having slowed or showing signs of going into reverse, now is certainly one of those moments where we wait to see if the now familiar oscillation happens yet again. I suppose we are at the point where there is renewed selective pressure on the virus to show its hand in terms of a new variant that dominate by being able to punch through the existing immunity picture in an obvious way, at scale. Because clearly we've gone quite a long way beyond the point where the last dominant version of the virus could sustain growth, due to running out of sufficient number of fresh victims, and so some mutations (or other changes to the population immunity picture, eg notable waning) are required in order for the virus to enjoy obvious growth again. Such a variant could have been around for some time and may be one of the ones thats already on the radar, and so what I really mean is that now is the time we will start to get a clearer view of its rise to dominance becoming obvious.