SARS-CoV-2 Delta variant - Wikipedia

en.wikipedia.org/wiki/SARS-CoV-2_Delta_variant
The Delta variant (B.1.617.2) was [6][7] 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.

Covid-19 Rates by Time since Vaccination during Delta Variant ...

pmc.ncbi.nlm.nih.gov/articles/PMC10193243/
With the emergence of the delta variant, the United States experienced a rapid increase in Covid-19 cases in 2021. We estimated the risk of breakthrough infection and death by month of vaccination as a proxy for waning immunity during a period of ...

Variants and Genomic Surveillance | Covid | CDC

www.cdc.gov/covid/php/variants/variants-and-genomic-surveillance.html
Published SARS-CoV-2 sequences CDC collaborates with state and local public health laboratories and partners, such as the Association of Public Health Laboratories, to increase the number of specimens that are sequenced as part of the National SARS-CoV-2 Strain Surveillance (NS3) program. These collaborative sequencing efforts provide a better understanding of the SARS-CoV-2 variants in the US.

COVID-19 Epidemiology during Delta Variant Dominance Period in 45 High ...

wwwnc.cdc.gov/eid/article/29/9/23-0142_article
Previous studies reported mixed results on death rates during the period of Delta variant prevalence; 2 studies reported no differences in mortality rates (26) or in-hospital deaths (27), and 3 studies indicated an increase in mortality rates (28; A. Kumar et.

Genomic Surveillance for SARS-CoV-2 Variants: Predominance ...

www.cdc.gov/mmwr/volumes/71/wr/mm7106a4.htm
What are the implications for public health practice? The dynamic landscape of SARS-CoV-2 variants in 2021, including Delta- and Omicron-driven resurgences of SARS-CoV-2 transmission across the United States, underscores the importance of robust genomic surveillance efforts to inform public health planning and practice.

Exponential growth, high prevalence of SARS-CoV-2, and vaccine ... - AAAS

www.science.org/doi/10.1126/science.abl9551
Main and top left: Complete replacement of Alpha by the Delta variant from REACT-1 round 12 to round 13 and weighted prevalence of SARS-CoV-2 infection among a random sample of the population of England ages 5 years and above by self-reported vaccine status.

Covid-19 Rates by Time since Vaccination during Delta Variant ...

evidence.nejm.org/doi/full/10.1056/EVIDoa2100057
With the emergence of the delta variant, the United States experienced a rapid increase in Covid-19 cases in 2021. We estimated the risk of breakthrough infection and death by month of vaccination as a proxy for waning immunity during a period of delta variant predominance.

Symptom prevalence, duration, and risk of hospital admission in ...

www.thelancet.com/journals/lancet/article/PIIS0140-6736(22)00327-0/fulltext
The prevalence of symptoms that characterise an omicron infection differs from those of the delta SARS-CoV-2 variant, apparently with less involvement of the lower respiratory tract and reduced probability of hospital admission. Our data indicate a shorter period of illness and potentially of infectiousness which should impact work-health policies and public health advice.

COVID-19 Incidence and Death Rates Among Unvaccinated and Fully ...

pmc.ncbi.nlm.nih.gov/articles/PMC9351531/
COVID-19 Incidence and Death Rates Among Unvaccinated and Fully Vaccinated Adults with and Without Booster Doses During Periods of Delta and Omicron Variant Emergence — 25 U.S. Jurisdictions, April 4-December 25, 2021

Delta variant prevalence, by state - Becker's Hospital Review

www.beckershospitalreview.com/quality/public-health/delta-variant-prevalence-by-state/
The highly transmissible delta variant now accounts for nearly 99 percent of COVID-19 cases in the U.S., according to CDC data. Here is a breakdown of delta prevalence in 34 states that submitted ...
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