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New COVID Variant JN.1 Growing Fast In US, CDC Says

The new COVID variant JN.1 growing fast in US, according to the US Centers for Disease Control and Prevention. It's thought to be responsible for about 20% of all new Covid-19 cases in the US.

Author:Camilo Wood
Reviewer:Dexter Cooke
Dec 20, 2023
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The new COVID variant JN.1 growing fast in US, according to the U.S. Centers for Disease Control and Prevention. It's thought to be responsible for about 20% of all new Covid-19 cases in the US. It's already common in the Northeast, where about a third of new cases are thought to be caused by it.
Right now, the HV.1 subvariant is still the most common strain, but JN.1 is close behind. The CDC's most recent numbers show that HV.1 caused about 30% of COVID-19 cases in the U.S. in the two weeks ending December 9. The second most common strain was JN.1, which made up about 21% of cases. The third most common strain was EG.5.

New COVID Variant JN.1 Growing Fast In US

A face mask on a wrist
A face mask on a wrist
A new type of COVID-19 called JN.1 is spreading quickly and could cause a new wave of illness across the U.S. this holiday season, just as other respiratory viruses are peaking.
People all over the world learned about the subvariant 'Pirola' this summer because it has more than 30 changes to its spike proteins. JN.1 comes from BA.2.86, also known as 'Pirola'. Scientists were worried that it had changed so much that it would not be stopped by vaccines or antibodies against COVID-19. They thought that it could cause another huge outbreak of illness like the first Omicron version did in 2021.
That didn't happen, but BA.2.86 stayed around and grew very slowly in some places, like the US. Some studies say it may not have really taken off because it may not have been able to infect our cells as well as it used to.
Some people are worried about JN.1 because it is growing so quickly and has so many variations. Scientists are keeping a close eye on it. The new type, on the other hand, is very similar to the one we've seen before. There is a straight link between it and "Pirola," which has been spreading in the US since the summer.
Its parent strain, BA.2.86, has more than 30 changes that make it different from the omicron XBB.1.5 variant. JN.1 has one more mutation than that. XBB.1.5 was the most common type for most of 2023, and the new COVID-19 vaccine is aimed at this variant.
The COVID-19 strains that are most common in the U.S. right now all come from omicron, which first appeared in late 2021. The CDC says that between late November and mid-December, the number of people in the US who had JN.1 more than doubled. Thanks to holiday travel and a weak immune system, it seems to be getting better. said Dr. Shishi Luo, who is in charge of infectious diseases at the genomic sequencing company Helix, said:
When I just look at the growth curve, it is rising quite sharply, and it seems to coincide with the Thanksgiving break in terms of timing.- Dr. Shishi Luo
Variety hunters say that JN.1 will soon be the most common type of coronavirus all over the world. The World Health Organization called it a "interesting variant" on Tuesday because it is "rapidly spreading," but they also said that the extra risk to public health is still low. Dr. T. Ryan Gregory, an evolutionary biologist at the University of Guelph in Ontario who has been studying how the COVID-19 virus has changed over time, said:
It’s already pretty clear that it is highly competitive with existing XBB variants and looks like it’s on track to become the next sort of globally dominant group of variants.- Dr. T. Ryan Gregory
The good news is that a new study from Dr. David Ho's lab at Columbia University found that the present COVID-19 vaccine, which was made to help the body fight the XBB family of variants, also works well against BA.2.86 and its offshoots, such as JN.1.

Final Thoughts

There is a new strain of COVID-19 that is expected to stay in the U.S. through the holidays. The type that is growing the fastest in the U.S. is JN.1, which is related to BA.2.86. The Centers for Disease Control and Prevention say that JN.1 was the cause of more than 1 in 5 new coronavirus cases in the last few weeks.
Once the strain showed up, groups like the CDC and the WHO warned that it should be closely watched because it had a lot of changes.
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Camilo Wood

Camilo Wood

Author
Camilo Wood has over two decades of experience as a writer and journalist, specializing in finance and economics. With a degree in Economics and a background in financial research and analysis, Camilo brings a wealth of knowledge and expertise to his writing. Throughout his career, Camilo has contributed to numerous publications, covering a wide range of topics such as global economic trends, investment strategies, and market analysis. His articles are recognized for their insightful analysis and clear explanations, making complex financial concepts accessible to readers. Camilo's experience includes working in roles related to financial reporting, analysis, and commentary, allowing him to provide readers with accurate and trustworthy information. His dedication to journalistic integrity and commitment to delivering high-quality content make him a trusted voice in the fields of finance and journalism.
Dexter Cooke

Dexter Cooke

Reviewer
Dexter Cooke is an economist, marketing strategist, and orthopedic surgeon with over 20 years of experience crafting compelling narratives that resonate worldwide. He holds a Journalism degree from Columbia University, an Economics background from Yale University, and a medical degree with a postdoctoral fellowship in orthopedic medicine from the Medical University of South Carolina. Dexter’s insights into media, economics, and marketing shine through his prolific contributions to respected publications and advisory roles for influential organizations. As an orthopedic surgeon specializing in minimally invasive knee replacement surgery and laparoscopic procedures, Dexter prioritizes patient care above all. Outside his professional pursuits, Dexter enjoys collecting vintage watches, studying ancient civilizations, learning about astronomy, and participating in charity runs.
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