Scientists deliberately infected young, healthy volunteers with SARS-CoV-2, the coronavirus that causes COVID-19 — and now, they’ve shared their first results from that experiment.   

The new study, published Tuesday (Feb. 1) in Springer Nature’s preprint database, In Review, has not yet been peer reviewed, but it could provide insight into how mild COVID-19 unfolds, from the moment of exposure to the point that the virus is eliminated from the body. 


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