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Also helps explain seroprevalence studies showing higher % have had Covid in urban areas than elsewhere. Much more time in crowded spaces. This is why the results showing 20% in NYC have had Covid vs national rates of 5% in Spain & France are plausiblehttps://twitter.com/mugecevik/status/1257393262958182402 …
Doubt this changes day-to-day calculus for most people, since social distancing, masks etc can still help, but it shows different contexts/environments have very different risk profiles. Some parts of life can return to normal with minimal risk involved. Others very much cannot.
While I’m at it, 2 fab podcast episodes addressing Covid transmission, rich in experts & evidence:
1) @BBCMoreOrLess
on the science behind 2 metre (or is that 1 metre?) distancing guideline, and whether indoor/outdoor & duration matter more than distancehttps://www.bbc.co.uk/sounds/play/p08czkk7 …
2) @ScienceVs takes a deep-dive into the science on masks, speaking to the authors of some of the most-quoted research on effectiveness of homemade cloth masks. As ever, it’s not as simple as you might think...https://gimletmedia.com/shows/science-vs/xjheev2/coronavirus-the-mask-wars …
It does clarify that the measures we're putting in at work are more than just a nice to have.
Close contact in a small space over a long time = adults and young children in Primary school.
Note ‘children were as likely to be infected’. Worried about children’s level of infection and also their ‘shedding’ of the virus, and recent worrying Kawasaki evidence - along with issues around public transport - means for risks re proposed re-opening of schools/colleges.
It -should- change the calculus. As businesses reopen partially here, people are starting to get lax and opening up their circle for family get togethers and such.
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