Covid, a mystery of super speakers: they cause 80% of infections - World
2020-08-11T13:46:47.208Z
Study by the Fred Hutchinson Cancer Research Center in Seattle. The maximum viral load is concentrated in 48 hours (ANSA)
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2020-08-11T13:46:47.208Z
Study by the Fred Hutchinson Cancer Research Center in Seattle. The maximum viral load is concentrated in 48 hours (ANSA)
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