https://www.kccu.org/science/science/2023-01-28/three-years-after-covid-19-started-scientists-have-learned-valuable-lessons
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Three years after COVID-19 started, scientists have learned valuable lessons - KCCU
1/28/23 at 1:26pm
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KCCU
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Scott Simon Michaeleen Doucleff
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Three years after the World Health Organization declared COVID-19 a "public health emergency," scientists have learned several lessons about how pandemics begin and how to stop them.
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