Scientists are studying what led to an unexpected surge, and particularly whether a variant of the novel coronavirus first detected in India is to blame. The variant, named B.1.617, has been reported in some 17 countries, raising global concern. Here are the basics:
Scientists are studying what led to an unexpected surge, and particularly whether a variant of the novel coronavirus first detected in India is to blame. The variant, named B.1.617, has been reported in some 17 countries, raising global concern. Here are the basics:
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