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SARS-CoV-2 Omicron variant, illustration
Illustration of the Omicron variant of SARS-CoV-2 (green), the cause of Covid-19. The highly transmissible Omicron variant of SARS-CoV-2, BA.1, accounted for nearly all of the coronavirus infections globally in early 2022. Numbers of Omicron infections can double in under two days, which is significantly faster than previous SARS-CoV-2 variants and closer to what public-health officials would expect from the influenza virus., by BIOLUTION GMBH/SCIENCE PHOTO LIBRARY
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