- Covid loses 90% of ability to infect within 20 minutes in air – study https://www.theguardian.com/world/2022/jan/11/covid-loses-90-of-ability-to-infect-within-five-minutes-in-air-study 504 comments science
- Covid loses 90% of ability to infect within minutes in air – study says. https://www.theguardian.com/world/2022/jan/11/covid-loses-90-of-ability-to-infect-within-five-minutes-in-air-study 84 comments worldnews
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