1 report, 4 theories: Scientists mull clues on virus’ origin

1 report, 4 theories: Scientists mull clues on virus’ origin

1 report, 4 theories: Scientists mull clues on virus’ origin

The lengthy report is being published after months of wrangling, notably between U.S. and Chinese governments, over how the outbreak emerged, while scientists try to keep their focus on a so-far fruitless search for the origin of a microbe that has killed over 2.7 million people and stifled economies worldwide.

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