SARS-CoV-2 B.1.1.529 (Omicron) Variant — U.S. December 1–8, 2021

Details

• Journal Article:
  Morbidity and Mortality Weekly Report (MMWR)
• Corporate Authors:
  CDC COVID-19 Response Team
• Description:
  A new Variants of SARS-CoV-2 (the Virus that causes COVID-19), B.1.1.529 (Omicron) (1), was first reported to the World Health Organization (WHO) by South Africa on November 24, 2021. Omicron has numerous mutations with potential to increase transmissibility, confer resistance to therapeutics, or partially escape infection- or vaccine-induced immunity (2). On November 26, WHO designated B.1.1.529 as a Variants of concern (3), as did the U.S. SARS-CoV-2 Interagency Group (SIG)* on November 30. On December 1, the first case of COVID-19 attributed to the Omicron Variants was reported in the U.S. As of December 8, a total of 22 states had identified at least one Omicron Variants case, including some that indicate community Transmission. Among 43 cases with initial follow-up, one hospitalization and no deaths were reported. This report summarizes U.S. Surveillance for SARS-CoV-2 Variantss, characteristics of the initial persons investigated with COVID-19 attributed to the Omicron Variants and public health measures implemented to slow the spread of Omicron in the U.S. Implementation of concurrent Prevention strategies, including vaccination, masking, increasing ventilation, tTesting, quarantine, and isolation, are recommended to slow Transmission of SARS-CoV-2, including Variantss such as Omicron, and to protect against severe illness and death from COVID-19.
• Subjects:
  Adolescent Adult Aged Communicable Disease Control CoronaVirus Infections COVID-19 Female Humans Male Middle Aged Mutation Public Health Surveillance SARS-CoV-2 Travel-Related Illness Young Adult

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• Source:
  MMWR Morbidity Mortal Weekly Rep. 70(50):1731-1734
• Series:
  Weekly Report: Morbidity and Mortality Weekly Report (MMWR)
• DOI:
  http://dx.doi.org/10.15585/MMWRmm7050e1
• ISSN:
  0149-2195 (print) ; 1545-861X (digital)
• Pubmed ID:
  34914670
• Pubmed Central ID:
  PMC8675659
• Document Type:
  Journal Article
• Place as Subject:
  United States
• Pages in Document:
  4 pdf pages
• Volume:
  70
• Issue:
  50
• Collection(s):
  Morbidity and Mortality Weekly Report (MMWR)
• Main Document Checksum:
  urn:sha-512:f2e48fc479f725786ae275131680c4de27b2517354d6d68fe286f09319e32fc26ad1487f290a754841c87271dc406fc7c5859a563a2309ca601d867ddd24e5a6
• Download URL:
  https://stacks.cdc.gov/view/cdc/113661/cdc_113661_DS1.pdf
• File Type:
  [PDF - 131.88 KB ]