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In the wake of heated debate over the unproven lab leak theory, the world is calling on China to cooperate with investigations. But efforts to delve into this matter seem to be stalling.
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President Biden has ordered intelligence agencies to determine where the coronavirus originated, but China is bucking demands to let investigators see more. Can this probe lead to anything positive?
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With the focus shifting again to a Wuhan, China, lab, Dr. Céline Gounder, a COVID-19 adviser to the Biden transition team, says it's important to find the pandemic's origins to prevent the next one.