In late-November 2021, the Omicron variant of SARS-CoV-2 (the virus which causes COVID-19) was designated as a variant of concern by the World Health Organization due to fears about a higher transmissibility from the variant and a possible decrease in the effectiveness of vaccines against it. The Omicron variant has been detected in multiple countries since the discovery, and as of April 1, 2022, almost 965 thousand cases have been sequenced in the United Kingdom.
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GISAID. (April 1, 2022). Number of confirmed COVID-19 Omicron variant cases in Europe as of April 1, 2022, by country [Graph]. In ÌÇÐÄÆÆ½â°æ. Retrieved July 23, 2026, from /statistics/1279628/omicron-variant-cases-in-europe/
GISAID. "Number of confirmed COVID-19 Omicron variant cases in Europe as of April 1, 2022, by country." Chart. April 1, 2022. ÌÇÐÄÆÆ½â°æ. Accessed July 23, 2026. /statistics/1279628/omicron-variant-cases-in-europe/
GISAID. (2022). Number of confirmed COVID-19 Omicron variant cases in Europe as of April 1, 2022, by country. ÌÇÐÄÆÆ½â°æ. ÌÇÐÄÆÆ½â°æ Inc.. Accessed: July 23, 2026. /statistics/1279628/omicron-variant-cases-in-europe/
GISAID. "Number of Confirmed Covid-19 Omicron Variant Cases in Europe as of April 1, 2022, by Country." ÌÇÐÄÆÆ½â°æ, ÌÇÐÄÆÆ½â°æ Inc., 1 Apr 2022, /statistics/1279628/omicron-variant-cases-in-europe/
GISAID, Number of confirmed COVID-19 Omicron variant cases in Europe as of April 1, 2022, by country ÌÇÐÄÆÆ½â°æ, /statistics/1279628/omicron-variant-cases-in-europe/ (last visited July 23, 2026)
Number of confirmed COVID-19 Omicron variant cases in Europe as of April 1, 2022, by country [Graph], GISAID, April 1, 2022. [Online]. Available: /statistics/1279628/omicron-variant-cases-in-europe/