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COVID Variants Raise Health Alarms Worldwide


COVID Variants Raise Health Alarms Worldwide
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0:00 0:02:21 0:00

New strains of the coronavirus causing the COVID-19 pandemic have evolved, raising alarms with public health experts. The viruses appear to be more infectious, making them harder to control. But experts say the new vaccines against them should still work. VOA's Steve Baragona has more.

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