delta variant
Variant of SARS-CoV-2, the virus that causes COVID-19. It was discovered first in India in October 2020. It has an increased infectivity rate and has shown to be less affected by the COVID vaccines, and is now the dominant strain in the United States. Synonyms are B.1.617.2, AY.1, and AY.2.
The delta variant is now the dominant strain of COVID-19 in the US.