USA: Vaccine breakthough cases in Washington State by coronavirus variant to 30th June 2021

Washington State has recently published an update on the number of vaccine breakthrough cases.  More...

USA/UK: 2 separate clades of Delta coronavirus variant with K417N – AY.1 and AY.2

Through routine scanning of variation in Delta, a small number of sequences were detected which had acquired the spike protein mutation K417N.  More...