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Apr 26, 2023 · Learn about genomic surveillance of SARS-CoV-2, which causes COVID-19. Viruses constantly change and variations may have different characteristics. CDC provides credible COVID-19 health information to the U.S.
Aug 23, 2023 · All viruses, including the virus that causes COVID-19 (SARS-CoV-2), change over time. These viruses with changes are called “variants.”. These changes can affect how contagious a virus is, how well it responds to treatment, and how severely it affects people.
May 24, 2021 · updated Apr 12 2024. To identify and track SARS-CoV-2 variants, CDC uses genomic surveillance.
- What Is CDC Doing to Track Sars-Cov-2 Variants?
- Genomic Sequencing Process For Sars-Cov-2*
- Bioinformatic Analysis of Genomic Sequence Data
- Leading The National Sars-Cov-2 Strain Surveillance (NS3) System
In the United States, CDC uses genomic surveillance to track emerging SARS-CoV-2 variants that cause COVID-19. CDC established multiple pipelines to connect genomic sequence data from CDC, public health laboratories, and commercial diagnostic laboratories within publicly accessible databases maintained by the National Center for Biotechnology Infor...
Specimen receipt and initial processing:Specimens are received and entered into the laboratory information system.Specimen preparation and sequencing: SARS-CoV-2 RNA is extracted and converted to complimentary DNA, enriched, and loaded into the next-generation sequencing equipment.Sequence data generation and collection:Specimens are sequenced and data is collected from sequencers and initial quality control steps are taken. The raw data is processed and turned into sequence...Sequence data submission to public repositories: Scientists conduct quality control steps. Sequences not initially accepted by public repositories are analyzed and potentially re-sequenced for resu...Published data are available to scientists around the world through public repositories. CDC regularly collects genomic sequence data from multiple sources to support national surveillance. Commercial laboratories transfer genomic sequence data to CDC at step 3 where it is processed and submitted for publishing. Public health laboratories, research...
The NS3 program collects, analyzes, and shares information about the genetic diversity of SARS-CoV-2, the virus that causes COVID-19. The program provides a comprehensive and population-based surveillance system for the United States to track virus evolution over time and identify emerging variants that may affect the performance of diagnostics, th...
Dec 16, 2021 · SARS-CoV-2 variant B.1.1.529 (Omicron), first reported to WHO on November 24, 2021, has been designated a variant of concern. Mutations in Omicron might increase transmissibility, confer resistance to therapeutics, or partially escape infection- or vaccine-induced immunity.
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Variants of SARS-CoV-2, the virus that causes COVID-19, have been reported in many countries around the world. Learn more about the current variants of concern. CDC provides credible COVID-19 health information to the U.S.
Dec 2, 2022 · COVID-19 Data and Variant Proportions. Variants in the US. Global Variants. Genes in the SARS-CoV-2 genome contain instructions to build parts of the virus. For example, the brown section in the picture has genetic instructions to build the spike protein, which attaches the virus to human cells during infection.
