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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. The World Health Organization (WHO) indicated in June 2021 that the Delta variant was ...
Lineage B.1.617 is a lineage of SARS-CoV-2, the virus that causes COVID-19. [1] It first came to international attention in late March 2021 after the newly established INSACOG performed genome sequencing on positive samples throughout various Indian states. Analysis of samples from Maharashtra had revealed that compared to December 2020, there ...
[23] [24] Other organisations such as the CDC in the United States typically define their variants of concern slightly differently; for example, the CDC de-escalated the Delta variant on 14 April 2022, [25] while the WHO did so on 7 June 2022. False-colour transmission electron micrograph of a B.1.1.7 variant coronavirus. The variant's ...
Delta. COVID-19 variant Delta was less contagious than Omicron and is not currently circulating, explains Dr. Kasson. Though Delta caused about twice as many infections as its predecessors ...
The Delta variant, which previously ravaged India and the U.K., now accounts for an estimated 83% of new U.S. coronavirus cases in recent weeks. Furthermore, according to the CDC, those who are ...
With the Delta variant driving a surge in COVID-19 infections, accounting for more than 90% of new cases across the U.S., health officials warn the threat of the contagious variant is "serious" as ...
On 26 November at an emergency meeting in Geneva, Switzerland WHO's Technical Advisory Group on SARS-CoV-2 Virus Evolution designated PANGO lineage B.1.1.529 a variant of concern (VOC) and gave it the designation Omicron (skipping Nu and Xi, the next letters in the Greek alphabet in keeping with its nomenclature protocol introduced for the Delta variant).
According to the CDC, “the United States is once again seeing a rise in COVID-19 cases, hospitalizations, and deaths.”CDC data shows that as of July 22, 35% of counties across the country are ...