This horrifying second wave is a catastrophe not only for India but for the world. Allowing the virus to circulate unchecked increases the risk that dangerous new strains will emerge. One worrying variant first detected in India, called “the double mutant”, has already been found in several other countries, including America and Britain. Even as scientists labour to understand how big a threat it poses, more variants are appearing.
— The Economist, Leaders, 24 April 2021
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