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Genetic Study Retraces Covid’s Origins in Bats

In the early 2000s, a coronavirus infecting bats jumped into raccoon dogs and other wild mammals in southwestern China. Some of those animals were sold in markets, where the coronavirus jumped again, into humans. The result was the SARS pandemic, which spread to 33 countries and claimed 774 lives. A few months into it, scientists…

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Wegovy Can Treat a Dangerous Liver Disease, Study Finds

New research shows that semaglutide, the compound in the weight-loss drug Wegovy, could treat an increasingly common liver disease. The study, published Wednesday in the New England Journal of Medicine, included 800 adults with a severe form of liver disease known as metabolic dysfunction-associated steatohepatitis, or MASH. People develop MASH after fat builds up in…

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