'Crimes against humanity': Hayes on holding leaders accountable for Covid failure

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Dr. Fauci: We don't know the definitive answer on the origins of Covid
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The Truth about the Lab Leak theory
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Lab leak? The raging debate over how Covid started
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Chris Hayes: What’s really at stake in the Covid origin debate
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Dr. Patel on Covid origins: We’ll likely never come to definitive conclusion
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Biden: 'We've broken the Covid grip on us'
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Marjorie Taylor Greene embarrasses herself with misinformed talking point
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Trump and DeSantis try to out anti-vaxx each other
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Covid conspiracist Marjorie Taylor Greene tapped to investigate pandemic
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McCarthy selects Covid conspiracy theorist for pandemic panel
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Trump record on Covid may be insufficiently delusional for the GOP base
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A prominent medical expert is denying Covid death numbers
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What's driving U.S. drug shortages and how to fix them
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Exiting Biden Covid science officer hails vaccine success
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Is the Biden admin prepared to tackle the latest Covid variant?
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'A moment for collaboration' What China's COVID surge means for the world
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Dr. Gottlieb: China could have successive waves of infection now
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U.S. to implement Covid rules for travelers from China
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The U.S. tackles growing flu and Covid cases
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Busted: Watch DeSantis take credit for vax before pandering to conspiracy theorists
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UP NEXT
Dr. Fauci: We don't know the definitive answer on the origins of Covid
06:17
The Truth about the Lab Leak theory
25:09
Lab leak? The raging debate over how Covid started
07:21
Chris Hayes: What’s really at stake in the Covid origin debate
06:43
Dr. Patel on Covid origins: We’ll likely never come to definitive conclusion
04:48
Biden: 'We've broken the Covid grip on us'
01:15