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Thanks to
New Scientist magazine for highlighting an issue we’ve been talking about for a long time: as winter trundles onwards and the kids are back at school, how do teachers ventilate their classrooms to help keep themselves and pupils safe from covid?
While it’s simple enough in summer to throw open the windows, in winter it’s an entirely different challenge. Let’s look at the risks, how those involved feel, and the best covid disinfection solution for schools.
School teachers struggle to keep classrooms covid-safe this winter
School absences are soaring in the UK as winter bites and covid spreads through educational establishments. Now the classroom mask-wearing guidelines are lifted, teachers are being left wondering what’s the best way to ventilate their classrooms while staying warm.
CO2 monitors deployed without adequate explanation or support
The government has sent over 350,000 CO2 monitors to schools in England since September last year. Sadly confusion and ‘poor communication’ about how to use the machines has left teachers unsure what to do and pupils struggling to work in freezing cold classrooms. At the same time the under eleven age group remains ‘almost entirely unvaccinated’, which makes covid disinfection and ventilation more important than ever.
CO2 monitors reveal how well ventilated a room is. If the reading is high it means there isn’t enough ventilation for the number of people in the room, which in turn means there’s a higher risk of transmitting covid to pupils and teachers. But like all tech, the monitors only work if they’re used properly.
The mixed messages teachers have been given have left many baffled, resorting to opening the windows instead. 16% say they’ve had no guidance at all, 34% say they were told to open all their windows as wide as they can, 18% said they’d been told to open the windows a little bit. Many teachers say they haven’t had any advice on what the numbers the CO2 monitors reveal actually mean.
Catherine Noakes from the University of Leeds is a specialist in ventilation and airborne infections. She says windows should be opened for about 10 minutes at a time every hour, as well as opening doors and windows wide at break and lunchtimes. But this isn’t possible in many schools where the windows have been painted shut or were never designed to open in the first place.
UVC covid disinfection for schools to the rescue
Schools with windows that can’t open will eventually be sent air purifiers by the government, designed to help remove covid particles from the air. But so far the government hasn’t mentioned UVC technologies, even though UVC has been used in healthcare settings for many decades to clean and disinfect surfaces and air. It kills Ebola, SARS, MERS, flu and more types of virus, as well as every variant of covid. Isn’t it about time they listened to the UVC covid killing science?
If you’d like to disinfect your school against covid without freezing your pupils, let’s talk!