new variants of omicron ba.4 and ba.5. white text on dark blue background.

529 2019 abstract africa ba4 ba5 background backgrounds banner blue care color colors concept concepts corona coronavirus cov covid covid19 dark deformed denim design different disease drawing element epidemic genetic graphic health healthcare icon illness illustration infection infectious label letter lineage medicine mutant mutation name ncov new omicron omikron pale pandemic pango pattern people protein proteins sars shape sign size south spike sublineage subtype symbol symbolize text typescript variant variants variation vector virus viruses white word worried