2m IS NOT SOME MAGIC PROTECTION - it DOESN'T WORK IF YOU'RE INDOORS FOR HOURS AS IN CLASSROOMS. Especially if no masks or ventilation.
The DfE is clearly too stupid to understand that what is most important in classroom settings are:
DURATION OF EXPOSURE
AEROSOLS
VENTILATION
MITIGATION (masks, class size probably more important than social distancing, particularly if no ventilation)
What is wrong with these people? I am offended my taxes pay for such idiots to be in charge (the Ministers and MPs but also come on civil servants)
english.elpais.com/society/2020-10-28/a-room-a-bar-and-a-class-how-the-coronavirus-is-spread-through-the-air.html
From the classroom scenario
If two hours are spent in the classroom with an infected teacher, without taking any measures to counter the number of aerosols, there is the risk that up to 12 students could become infected - note in the scenario students are at individual socially distanced desks NOT TRUE OF UK SCHOOLS.
In the scenario even children at the back of the class get infected way more than 2m away because - DURATION OF EXPOSURE, AEROSOLS
From same scenario
If everyone is wearing a face mask, the number that could become infected drops to five. In real outbreaks, it has been noted that any of the students could become infected irrespective of their proximity to the teacher as the aerosols are distributed randomly around the unventilated room - but FACE MASKS PROTECT AGAINST SEVERE DISEASE so for those 5 infected they would likely be less severely ill - but note 2m IS NOT PROTECTIVE
If the room is ventilated during the lesson, either with fresh air or mechanically, and the class is stopped after an hour in order to completely refresh the air, the risk drops dramatically
Where's the DfE guidance saying rooms need to have air refreshed every hour, Gav? What about all those state schools with windows that don't open - where are the builders going in to fix it? Where's the money?
I am so bloody angry. Sorry about the caps - that's for the hard of thinking at the DfE.