The virus losing strength is a complex subject, especially since many of the things that might look like the virus losing strength are about our perceptions rather than the strength of the virus. Now is the wrong moment for me to try to find signs of this that could be separated from all the other stuff that affects perceptions and current levels of hospital admissions, intensive care cases and deaths.
The current number of cases is nothing like the number of cases we had during the terrible part of the first wave. We dont have good real numbers from that initial period because the testing regime was so crap, but for a while it was possible for authorities to overlook and underestimate the number of cases, which was very large, without having their incorrect views very quickly corrected by hospital data. By the time that changed and even they couldnt miss the horror, it was rather late and infections had spiralled to scary high levels. The surveillance situation is quite different now, and we can pick things up at much lower levels, long before I would expect them to show up in terrible ways in hospital data. And when I say long before Im not just talking about the one to several weeks lag between infections and hospital admissions/deaths, I also mean at levels that may never lead to anything that shows up in hospital data later, especially if we act appropriately when infection increases are detected in a particular place.
I dont have a good number for how many of the deaths would be missing from the picture if we have a great handle on hospital and care home infections during any major wave or general resurgence of the virus, but it was a fairly large proportion of cases in the first wave so I'd expect that to make a difference next time if we can hold onto those infection control gains.
The possibility that more people are better able to fight off infection in the summer for a number of possible reasons cannot be excluded either.
There is plenty to be happy about with the current hospital data. It shouldnt be used as a reason to be more relaxed about what measures we take from now on though. We should keep an eye on it but premature conclusions on this front could be a disaster, so some of the nerves will have to remain until we see what a winter is like. And I would still use hospital data if I wanted to try to convince someone with too much of a 'its all over' attitude that the daily realities of the virus are not insignificant. For example hospital admission numbers are very low compared to the first peak, but we are still talking about 142 patients admitted in the UK in a day, and that number is limited by the fact the numbers for all UK nations except Wales that are being stuck on the uk dashboard are only confirmed cases. And I can look at the numbers for Wales and speculate in my mind about what Englands number would be like if it included suspected cases.
Overall summary of the respiratory viruses in circulation within the UK
coronavirus.data.gov.uk
As for Scotland, I can add something to the picture by looking at their data for the number of suspected COVID-19 ambulance attendances and number of suspected COVID-19 patients taken to hospital using table 3 of the first spreadsheet on the following site. Or at least I used to be able to, now that I look again they stopped providing this data after the 20th July entry so I'm now in the dark on that and this does not impress me.
Coronavirus (COVID-19): trends in daily data - gov.scot
But yeah, nothing I am trying to say here is designed to paint a grim picture of the current hospital situation. It does not surprise me given the current number of infections we have. Lockdown and various other measures were far too late last time so we shouldnt be judging the need to act and keep the virus transmission levels down by the standards that were used the first time around. But that also means that when we hear about spikes that have alarmed the authorities enough that they impose measures on a particular location, we should not automatically expect to see a few weeks later a notable rise in very ill people and deaths.
There are other possibilities too but its way too early for me to think I could pick them out from the stuff I already described.