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Your @UniversitiesUK employer has a legal duty to assess the risks of resuming teaching in person👇. Make sure yours has assessed the risks of airborne (aerosol) Covid-19 transmission in the *specific* classrooms in which you're assigned to teach. 1/7
universitiesuk.ac.uk/policy-and-ana…
Rate of ventilation of classroom (either air changes per hour or litres per second) is crucial to an assessment of airborne transmission risk👇. Make sure your employer informs you of the ventilation rates of the classrooms they've assigned you. 2/7
thelancet.com/journals/lance…
If they say they don't know 🤷‍♂️, inform them that they'll need to investigate to determine what this rate is, in order to provide a proper assessment of the risks of teaching in the classrooms they've assigned you. Also request floorspace & ceiling height of your classrooms. 3/7
You'll then be able to cross-check your employer's risk assessment by entering this information into this 👇Covid-19 airborne transmission modeller by @jljcolorado, an atmospheric chemistry professor & aerosol expert at the University of Colorado. 4/7
tinyurl.com/covid-estimator
For more about this modeller, see this press release from the Cooperative Institute for Research in Environmental Sciences at the University of Colorado. 5/7
cires.colorado.edu/news/covid-19-…
Please note that airborne transmission is not the only Covid-19 risk associated with classroom teaching. Transmission via large respiratory droplets is a distinct risk, which is addressed by 2m social distancing and face masks. 6/7
'Fomite' transmission (via touching contaminated objects) is a further risk of transmission, e.g., by sitting in the same seat an infected person occupied, even hours earlier👇. 7/7
PS: See this thread for more on the risks of aerosol transmission in classrooms👇. 1/
And see also this thread👇. 2/2
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More from @MikeOtsuka see all

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Michael Otsuka
@MikeOtsuka
Every @ucu member will be charged £15. 120,000 members x £15 = £1,800,000! So the @UCULeft-controlled HEC blew a huge hole in union finances, by calling members out on 22 days of strikes w/o figuring out how to pay for them. Recklessly irresponsible. 1/
And then @UCULeft turns around and condemns the very levy that a majority of their own NEC members supported to bail themselves out of their own profligacy. @UCULeft has no shame. 2/
.@uculeft's own proposal to bail themselves out for their profligacy is to call on other unions -- whose average members are generally much less well paid than the HE members they called out for 22 days of strikes -- to donate £1mn to the @ucu strike fund. Again, no shame. 3/
Read 6 tweets
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Michael Otsuka
@MikeOtsuka
If a university in England with 10,000 students resumed in person teaching today, we can expect that 6 students would be Covid-19 infected, 4 of whom would be unaware of this fact. 1/8
Esp if not wearing good face masks, these 4 would place many others at risk by attending classes in enclosed rooms, esp if lacking good ventilation. Even with 2m distancing, they'd place others at risk via aerosol transmission throughout room. See👇. 2/8
Many of these classrooms will include someone whom the UK government rates as "at greatest risk of severe illness and mortality from Covid-19", because over 50 or with underlying co-morbidities👇. 3/8
Read 21 tweets
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Michael Otsuka
@MikeOtsuka
In the long term, neurological injury from Covid-19 could cause more death & far greater disability than the more immediate & apparent damage to the lungs. 1/
bbc.com/future/article… Image
About 50% of those diagnosed w the coronavirus have experienced neurological problems. 2/ Image
"more than 300 studies ... have found a prevalence of neurological abnormalities in Covid-19 patients" 3/ Image
Read 9 tweets

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