Delta AY sub-variant, which requires 'urgent research', detected in these U.S. states
AY variant has sparked calls for investigation after rising sharply in the United Kingdom from July onwards, as seen in the following GISAID virus sampling data chart from Outbreak.info.It's a version of the AY.4 Delta variant that already accounts for around 80 percent of recent cases in the U.K. Now, scientists have noticed an offshoot of the AY.4 variant—an offshoot of an offshoot—that includes a spike mutation known as Y145H.
Dr. Scott Gottlieb, former commissioner of the U.S. Food and Drug Administration from 2017 to 2019, took note of the variant in a tweet on Sunday and said it had been increasing in prevalence since about July. "There's no clear indication that it's considerably more transmissible, but we should work to more quickly characterize these and other new variants."
AY.4.2 remains very rare in the U.S., where only six sequences have been recorded. In the U.K. by comparison, there had been 14,385 sequences as of October 16.
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