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How the Delta variant achieves its ultrafast spread
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How the Delta variant achieves its ultrafast spread

Sara Reardon A queue at a hospital in Surabaya, Indonesia, that treats people with COVID-19. Indonesia has been hard hit by the Delta variant.Credit: Juni Kriswanto/AFP/Getty Since first appearing in India in late 2020, the Delta variant of SARS-CoV-2 has become the predominant strain in much of the world. Researchers might now know why Delta...