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AY.4.2 is an evolution of the original Delta variant, which was first identified in the U.K. and has since become the dominant form of SARS-CoV-2 globally.
An expert told Newsweek it seems increasingly likely that the offshoot is more transmissible than other Delta variants.
What is AY.4.2, also known as the Delta Plus variant?. Read more at straitstimes.com.
Scientists are paying close attention to AY.4.2, an offshoot that could possibly be more contagious than the original form of Delta.
Scientists are keeping a close eye on the Delta offshoot, known as AY.4.2, which has been spreading in the U.K. since July.