Young parisians look at a banner reading “Thanks” to honor the professional categories on the front line during a nationwide confinement to counter the COVID-19, in Paris, Monday, April 20, 2020. A flood of new research suggests that far more people have had the Covid-19 without any symptoms, fueling hope that it will turn out to be much less lethal than originally feared. (Photo by Francois Mori/AP Photo)
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