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  2. Feb 6, 2023 · Some variants spread more easily and quickly than others, which may lead to more cases of COVID-19. For the most up to date information about current variants, visit CDC’s COVID Data Tracker . Over the course of the pandemic, CDC has established multiple pathways to generate and share viral genomic sequence data using publicly accessible ...

  3. Variants of severe acute respiratory syndrome coronavirus 2 ( SARS-CoV-2) are viruses that, while similar to the original, have genetic changes that are of enough significance to lead virologists to label them separately. SARS-CoV-2 is the virus that causes coronavirus disease 2019 (COVID-19).

  4. Nov 15, 2023 · More than 50 variants have been identified; although some are no longer spreading. COVID variants of concern. Experts use a rating system to determine how carefully a variant needs to be watched....

  5. Sep 1, 2023 · Since the beginning of the pandemic, we’ve seen a number of prominent variants, including Alpha, Beta, Delta, and Omicron. Although new variants are an expected part of the evolution of viruses, monitoring each one that surfaces is essential in ensuring we—in the U.S. and globally—are prepared.

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  6. Data Tracker Home Trends Maps Hospitalizations Deaths Emergency Department Visits Vaccination Distribution & Coverage Vaccine Effectiveness Variants & Genomic Surveillance Traveler-Based Genomic Surveillance Wastewater Surveillance Post-COVID Conditions Health Equity Pediatric Pregnancy Seroprevalence Other COVID-19 Data Communications Resources COVID-19 Home

  7. SARS-CoV-2 variants in analyzed sequences. School closures during the COVID-19 pandemic. Share of SARS-CoV-2 sequences that are the delta variant. Share of SARS-CoV-2 sequences that are the omicron variant. Share of global daily COVID-19 vaccine doses administered as boosters. Share of people who completed the initial COVID-19 vaccination protocol.

  8. Mar 12, 2021 · Virus mutation. Coronavirus variants. UK variant. South African variant. Brazilian variant. Vaccine protection. Vaccine race. Bottom line. Hu Yuanjia/VCG via Getty Images. Viruses naturally...

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