BA.2.86 is beginning to spread throughout the United States.
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Researchers still don’t know how well BA.2.86 will evade immunity or whether it will cause more severe disease than its predecessors.
SARS-CoV-2, the virus that causes COVID-19, has evolved over time into multiple variants and sublineages.
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With the emergency phase of the COVID-19 pandemic in the rearview mirror, at least for now, we look back on a handful of stories that provided sharp insights at key moments in the pandemic.
It’s hard to keep up. But new Omicron sub-variants are emerging that may lead to reinfections and another spike in cases.
The CDC recommends the second booster for those over 50 who received their initial booster shot at least four months earlier.
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New data on the second booster suggests the older you are, the more you need it.
More than 1,000 cases of omicron XE have been detected in the UK so far. But we shouldn’t be seriously concerned at this stage.
B.C. Jobs Minister Ravi Kahlon has his COVID-19 vaccine QR code scanned in September, 2021.
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Vaccine passports became one of the most divisive issues of the COVID-19 pandemic. These policies were affected not only by public opinion but by new variants and changing goals for herd immunity.
Hybrid viruses that are part delta and part omicron have been found in Europe and North America.
Inequality in coronavirus genomic surveillance delays the detection of globally significant variants of concern.
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Improving genomic surveillance to better understand new variants as they arise in different parts of the world could prevent threats to vulnerable health systems and populations.
The CDC’s new recommendations have caused consternation among the public, the media and even among doctors.
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The CDC’s controversial recommendation changes are based on new studies showing that most omicron transmission takes place within five days of the onset of illness.
Three months after Omicron abruptly arrived, we now know more about the variant. So what does the science say about how contagious it is, how long it takes to get sick and how effective vaccines are?
As the pandemic winds down, continual surveillance of wild animals is vital to ensure that it doesn’t switch to another sphere of life.
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A growing body of research shows that COVID-19 protocols should be extended to areas in which there is a human-animal interface such as zoos, wildlife sanctuaries and game farms.
Preliminary research suggests that the omicron variant may potentially induce a robust immune response.
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Some of the omicron variant’s unique properties – such as its ability to spread rapidly while causing milder COVID-19 infections – could usher in a new phase of the pandemic.
Variant-specific vaccines would undoubtedly increase immunity. But waves of new variants would engulf the population faster than these vaccines could ever be deployed.
The list of SARS-CoV-2 variants – each with its own unique qualities that give it an edge – just keeps growing.
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People are buzzing with questions about the omicron variant and whether it could help usher in herd immunity. A team of virologists deciphers the latest findings.
A positive COVID-19 test is the first step in the process.
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A nationwide genomic surveillance system analyzes positive COVID-19 tests to build a picture of which variants are spreading in the population.
The prime minister’s inflexibility on the home-testing COVID tests is beyond curious - especially in an election year.
The Omicron variant has been confirmed in all continents except Antarctica.
One of the ways the Omicron variant is different from other variants is the sheer number of mutations in the spike protein. Does this make it a super-variant?
South Africa is seeing a spike in COVID-19 cases.
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At this stage, we cannot say anything about the severity of cases with Omicron - either in primary or reinfections.
A researcher works with COVID-19 samples from patients.
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Careful lab work will complement public health data as researchers worldwide focus on omicron, asking questions about contagiousness, severity of disease and whether vaccines hold up against it.
Evidence suggests kids under 12 aren’t major drivers of COVID spread. Avoiding them isn’t necessary.