CNN Top News - As Omicron takes its toll around the world, the ramshackle infrastructure that has kept schools running over the past year is in jeopardy

2022.01.12 00:05

As Omicron takes its toll around the world, the ramshackle infrastructure that has kept schools running over the past year is in jeopardy

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As Covid-19 cases skyrocketed across Britain in late December, Stuart Guest spent his vacation poring over scientific reports about air cleaning and filtration systems.

원문출처 : https://www.cnn.com/2022/01/11/world/covid-omicron-schools-uk-europe-us-cmd-intl/index.html

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