A teacher in class wearing a face mask as a precaution at Ayany Primary School in Nairobi, Kenya on November 17, 2020. After a long period of closure due to the coronavirus pandemic schools reopened under precautionary measures such as social distancing between pupils in classes, having students temperatures checked regularly and washing hands with sanitiser. (Photo by Donwilson Odhiambo/SOPA Images/LightRocket via Getty Images)
