Interesting piece in yesterday's Guardian about how the 'second wave; concept is probably misleading.
Not sure at all how sound it is scientifically, but I thought it was worth sharing.....
Other scientists also quoted .......
My personal stance on this is that its largely quibbling over semantics, but thats mostly because the stakes are high with this pandemic and people and the media are paying attention in ways they usually dont, and some of the language and concepts are overused and then found to be quite inadequate.
I dont agree with those in the article that say this second wave thinking is faulty simply because we are applying the rules of flu to a new virus. Because some of the faulty thinking or inappropriate concepts are just as faulty when applied to flu pandemics too! As I've sid before, the first UK swine flu wave peak happened in July 2009, so where there is faulty thinking along seasonal lines with this coronavirus, the same faults would also have applied if they'd been said in regards to the flu in 2009. But back then the stakes were not so high, peoples interest waned, and those reporting on the ongoing pandemic waves were able to do so without much in the way of any controversary about whether subsequent peaks were really their own distinct waves.
Of course there has also been many decades of focus on the 1918 flu pandemic, a horrific example of a pandemic which has tended to dominate the popular impression of what a bad pandemic is like, but also gave birth to various pandemic cliches, partial truths and oversimplifications. And this very much applies to talk of a second wave, because the simple version of the 1918 pandemic includes rather prominently the idea that is that the 2nd wave was deadlier than the first. But this doesnt necessarily have any relevance for this current pandemic, and I would rather focus on the other reasons why a possible 2nd wave in this one is a big deal - the obvious stuff, the implications of having to bring back restrictions, the deaths, the healthcare system strains.
For those interested in more about past controversies about flu wave severity assumptions and the supposed lessons of 1918, this fairly short NHS piece from 2009 covers a paper from back then that was not impressed by some of the pandemic cliches that 1918 gave birth to:
An article in the Journal of the American Medical Association has questioned whether the prevailing belief that the current pandemic flu will return in a more dangerous
www.nhs.uk
And heres a paper looking at 2009 in the UK and concluding that the 2nd wae of swine flu was deadlier, but thinks that this was because of changes in behaviour that followed after the 'initial high-profile period' ended. Back then they were entirely comfortable describing the two waves in very broad terms with a somewhat arbitrary utoff point between them:
The end of the first wave was defined by the nadir of estimated cases between the two waves. The first wave lasted from 1 June 2009 to 30 August 2009, a period of 13 weeks. The second wave lasted from 31 August 2009 to 28 March 2010, a period of 30 weeks. Deaths were assigned to a wave based on date of symptom onset. When no date of symptom onset was available the earlier of two dates was used: either the date of hospital admission or the estimated date of symptom onset (date of death minus median time from symptom onset to death).
Its still inevitable I will end up talking in terms of a second wave at times because that is the language so many others are using, but I should try harder to speak a little differently on this when I can. I'd rather talk about specific peaks - eg another rise and peak in cases, deaths, hospital admissions etc. Thats what I think matters, thats why the stakes are high, not whether something technically counts as a new wave in epidemiological terms. As someone in the article mentions, our perception of what viruses are doing is not the whole and accurate story of the virus, its a story of the viruses implications for humanity at various times and places.
The UK government certainly experimented with terminology a bit on this front in the recent past. For a while a month or 3 ago they were using 'second spike'. And I did find myself using the term resurgence the other day, and I now note that some experts are going with that one too.
If we stick to and grasp the underlying details then limitations and flaws with this basic terminology dont really matter so much, its a bit of a side-show.