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The Delta variant (B.1.617.2) was [3] [4] a variant of SARS-CoV-2, the virus that causes COVID-19. It was first detected in India on 5 October 2020. The Delta variant was named on 31 May 2021 and had spread to over 179 countries by 22 November 2021.
Based on genome information, lineage B.1.617 was first detected in the UK on 22 February 2021, and in the US on 23 February 2021. [12] After detecting 77 cases of lineage B.1.617 in the UK in mid-April 2021, Public Health England designated the lineage as a variant under investigation. [15]
Delta (B.617.2) First identified in India in late 2020, the delta variant soon spread across the globe. It became the dominant variant of SARS-CoV-2 until the emergence of omicron in December 2021.
Country/Area Confirmed cases [1]as of 19 December Confirmed cases [2]as of 23 November Cases (other sources) as of 19 January 2022 First detection
Consumers are beginning to spend more cautiously, largely because of COVID-19 Delta variant concerns. COVID-19 Delta variant is dragging down spending, Goldman Sachs charts reveal [Video] Skip to ...
The continued spread of the SARS-CoV-2 virus has spawned a Greek alphabet of variants - a naming system used by the World Health Organization to track concerning new mutations of the virus that ...
On July 27, based on updated information for fully vaccinated people that new evidence on the Delta variant had provided, CDC added a recommendation for those people to wear a mask in public indoor settings in areas of substantial or high transmission. CDC also made other recommendations based on this information. [52]
The AY.4.2 variant is a new sub-lineage of Delta. The CDC says "there is no evidence" that it is more transmissible, or that it could evade vaccines.