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The mutation that helps Delta spread like wildfire
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The mutation that helps Delta spread like wildfire

SARS-CoV-2 coronavirus particles isolated from a US case of COVID-19. Scientists are trying to understand why the Delta variant spreads so quickly.Credit: National Institutes of Health/Science Photo LibraryAs the world grapples with the hyper-infectious Delta coronavirus variant, scientists are racing to understand the biological basis for its behaviour.A slew of studies has highlighted an amino-acid...