Omicron – Global Health Press

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The ‘Kraken’ subvariant XBB.1.5 sounds scary, but behind the headlines are clues to where COVID’s heading

The XBB.1.5 subvariant, known informally as “Kraken”, is the latest in a menagerie of Omicron subvariants to dominate the headlines, following increasing detection in the United States and United Kingdom. But there have...

15 February, 2023

5 min read

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COVID-19 vaccines, prior infection reduce transmission of Omicron

Vaccination and boosting, especially when recent, helped to limit the spread of COVID-19 in California prisons during the first Omicron wave, according to an analysis by researchers at UC San Francisco that examined...

6 January, 2023

4 min read

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mRNA COVID vaccines protect against severe Omicron for at least half a year

COVID-19 mRNA booster vaccines offered protection against severe COVID-19 caused by the Omicron variant for at least 6 months, and three doses of China’s inactivated vaccines were more protective than two doses...

31 August, 2022

3 min read

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Omicron less severe than Delta but more easily evades boosters

Three new observational studies from Scotland, Denmark, and the United States detail reduced hospitalizations and emergency department (ED) visits for Omicron COVID-19 infections relative to those caused by the Delta...

26 April, 2022

5 min read

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Omicron spread, low vaccination rates mean new variants possible

Get ready to learn more Greek letters. Scientists warn that omicron’s whirlwind advance practically ensures it won’t be the last version of the coronavirus to worry the world. Every infection provides a chance for the...

19 January, 2022

6 min read

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Arsenal against Omicron weakening

Omicron is very good at evading the immune protection conferred by vaccines, natural infection and agents such as monoclonal antibodies (mAbs) authorized to prevent serious infections, according to David Ho, MD, the...

17 January, 2022

6 min read

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WHO experts urge exploring updated COVID-19 vaccines

A World Health Organization (WHO) advisory group set up in September to examine the impact of SARS-CoV-2 variants on vaccine performance laid out a framework for assessing updated versions of COVID-19 vaccines, and the...

17 January, 2022

3 min read

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Omicron may be significantly better at evading vaccine-induced immunity, but less likely to cause severe disease

The Omicron variant of SARS-CoV-2 may be significantly better than previous variants at evading vaccine-induced antibodies, according to new research from Cambridge – but preliminary evidence suggests it is less likely...

22 December, 2021

4 min read

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Multiple early studies find notable Omicron vaccine evasion

In quickly moving scientific developments over the past 24 hours, three separate labs that tested the Omicron (B.1.1.529) COVID-19 variant against vaccines reported significant immune escape based on reduced antibody...

9 December, 2021

4 min read

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