Omicron Subvariants

• Omicron changed the course of the pandemic 1 year ago and still dominates. What’s next?

  On Nov. 24, 2021, a group of scientists in South Africa alerted the World Health Organization to a concerning new COVID-19 variant the world would come to know as Omicron.

  Health

  Nov 25, 2022
  
• Canada’s top doctor preparing for ‘worst-case scenario’ on COVID variants

  Dr. Theresa Tam says the Public Health Agency of Canada is keeping a careful eye on the evolution of Omicron variants, which are the most common subvariants in the country.

  Health

  Oct 18, 2022
  
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• Got COVID? Here’s how long immunity might last as new variants emerge

  Infection-acquired immunity from catching COVID-19 can act as a protective layer for a period of time, but it wanes and is not guaranteed, experts warn.

  Canada

  Oct 11, 2022
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• China urges ‘patience’ as local COVID cases soar to highest since August

  Pressure on officials has risen in recent weeks as the highly transmissible Omicron sub-variants BF.7 and BA.5.1.7 appeared in mainland China for the first time.

  World

  Oct 10, 2022
• Omicron BA.5 COVID subvariant spreading at ‘very intense level,’ WHO warns

  The WHO has seen a substantial increase in cases of the Omicron subvariant, BA.5, over the last four weeks and that trend is expected to continue.

  Health

  Jul 12, 2022
• Shanghai officials say new Omicron BA.5 subvariant found in city

  The find is highlighting the challenges China faces in trying to contain new mutations and cases under its "zero-COVID" policy, which has seen widespread continued lockdowns.

  Health

  Jul 10, 2022
• Novavax expects to produce COVID-19 vaccine targeting Omicron by fall

  Novavax Inc NVAX.O said on Friday it expects to provide a COVID-19 vaccine targeting Omicron in the fourth quarter.

  Health

  Jul 1, 2022
• Omicron BA.5 will account for nearly 70% of cases by Canada Day, experts predict

  Researchers examining the threat of emerging COVID-19 strains predict Omicron BA.5 will account for nearly 70 per cent of cases in much of the country by Canada Day.

  Health

  Jun 30, 2022
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• U.S. FDA backs COVID-19 booster shots tailored to target Omicron BA.4, BA.5 subvariants

  The BA.4 and BA.5 Omicron COVID-19 subvariants are now dominant in the United States, according to data from the Cenetrs for Disease Control and Prevention.

  Health

  Jun 30, 2022
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• Updated Moderna COVID-19 booster can combat Omicron subvariants, vaccine maker says

  Moderna's updated COVID-19 vaccine generated a strong immune response against the fast-spreading Omicron subvariants BA.4 and BA.5.

  Health

  Jun 22, 2022