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How Biden came round to the Wuhan lab-leak theory
By Demetri Sevastopulo
We need to know how Covid-19 emerged so we can stop it happening again
By Nick Paton Walsh
Is 'Patient Su' Covid's Patient Zero? asks IAN BIRRELL
By Ian Birrell
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Perspective | Lab leaks happen, and not just in China. We need to take them seriously.
By David Relman
Biden's new Wuhan lab leak investigation ramps up US-China blame game
By Melissa Conley Tyler