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How scientists know COVID-19 is way deadlier than the flu After months of study, scientists have better clarity on the coronavirus's lethal potential—which makes recent case surges all the more alarming. aj tu je celkom zaujimavy clanok, zrozumitelne napisany https://www.nationalgeographic.com/science/2020/07/coronavirus-deadlier-than-many-believed-infection-fatality-rate-cvd/ Flicker Żubr żuł żuchwą żurawinę |
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