dealtn wrote:88V8 wrote:dealtn wrote:Probably because they were following current Government guidelines. Is that not reasonable?
If guidelines are defective they should be ignored.
V8
And who decides if they are defective? Why not just advocate anarchy?
It's not a question of anarchy, just being a bit sceptical that current UK guidelines are as good as they could be, given that they're an outlier in international terms in how lax they are. It's not anarchy to take a more cautious approach when there's pretty good evidence now that it works. For instance, in Georgia last year mask wearing in schools correlated with a 37% reduction in Covid, ventilation saw an independent 35% reduction, and (ventilation + HEPA filtration) saw 48% reduction. If I had a child in school I would be fighting for those measures to be enforced :
https://www.cdc.gov/mmwr/volumes/70/wr/mm7021e1.htmFor instance, Toronto's school board has gone against state guidance and put HEPA filtration in all classrooms, gyms and shared spaces, and it seems to be making a big difference to infection rates in Ontario, which has not had a great record on Covid so far (whereas eg schools next door in Quebec are a disaster) :
https://toronto.ctvnews.ca/here-s-the-v ... -1.5541550And it doesn't have to be expensive - commercial HEPA units work out at about £10/child, less if you build your own. Students at UC San Diego held a workshop to build DIY units for the whole campus :
https://ucsdnews.ucsd.edu/pressrelease/ ... -19-spreadHere's a thread optimising the performance of a C$55 (£32) DIY filtration unit - MERV-13 is cheaper than HEPA but still works pretty well :
https://twitter.com/DavidElfstrom/statu ... 3009889286UK guidelines have consistently been behind the curve, and new challenges will always arise. For instance, there has been a rash of cases in the West Country lately where people are positive on lateral-flow, may well have symptoms, but come up negative on RT-PCR and so don't have to isolate. One possibility is that they have a variant similar to B.1.616 from Brittany, which gives a negative RT-PCR result in 85% of naso-pharangeal swabs but still comes up positive in swabs from deeper in the respiratory system (per
Fillatre et al in preprint) suggesting it's not mutating the PCR recognition sites. If it's deeper in the lungs then that could be "good" in that it should transmit less (delta's transmissibility seems to derive from having a much higher viral load in the upper respiratory system), but it's not good if it evades testing.