omicron sub-variant xb.1.16 also known as arcturus.

arrow 2019ncov abstract xbb116 backdrop background banner care acrturus arctur concept corona coronavirus covid19 dark darkening design disease drawing element epidemic frame graphic health icon infection line lineage medical mutation omicron omikron pandemic red sarscov2 shape sign spike subvariant subtype symbol variant variation vector virus sub-variant arcturus shows dramatic increase white text disease