B.1.1.7 is 40 to 70 percent more transmissible than other variants. Here’s what researchers have learned so far about B.1.1.7. The variant is less prevalent in California, New York and other states, where homegrown versions of concerning coronavirus variants are currently causing the majority of cases instead.įollowing the emergence of the variant in the United Kingdom, scientists have worked to get a handle on how mutations in the virus’s genetic blueprint might change its behavior, amid concerns that the virus might have gained the ability to evade vaccines or cause more severe disease. The news came amid a surge in coronavirus cases in many states, including Michigan, where the new variant, dubbed B.1.1.7, makes up nearly 58 percent of genetically screened samples collected as of March 27. Centers for Disease Control and Prevention had warned in January might happen ( SN: 1/15/21) And by early April, the variant had become the most common form of the coronavirus identified across the country, an event that the U.S. officials found the first case in the United States ( SN: 12/22/20). In December 2020, health officials in the United Kingdom announced that a new coronavirus variant was rapidly spreading across the region.
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