4.7 Letter

Increased Stability of SARS-CoV-2 Omicron Variant over Ancestral Strain

Journal

EMERGING INFECTIOUS DISEASES
Volume 28, Issue 7, Pages 1515-1517

Publisher

CENTERS DISEASE CONTROL & PREVENTION
DOI: 10.3201/eid2807.220428

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Funding

  1. Hong Kong Health and Medical Research Fund [COVID190116]
  2. Theme-based Research Scheme of Research Grant Council [T11-705/21-N]
  3. InnoHK grants for Centre for Immunology Infection

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The Omicron BA.1 variant of SARS-CoV-2 is more stable on smooth and porous surfaces compared to its ancestral strain.
As of April 2022, the Omicron BA.1 variant of concern of SARS-CoV-2 was spreading quickly around the world and outcompeting other circulating strains. We examined its stability on various surfaces and found that this Omicron variant is more stable than its ancestral strain on smooth and porous surfaces.

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