#subcladeK
From #SpokesmanReview: The country faces record flu cases due to a new strain, #SubcladeK. Though not in this year’s shot, the vaccine is still useful.

@jennifernuzzo.bsky.social notes #Flu strain mismatches happen, but vaccines still keep people out of the hospital.

More here ⤵️
What is 'Subclade K'? The new flu variant may already be in Spokane
Much of the country is facing record flu cases thanks to a new strain of the virus. And the “subclade K” variant is likely already here in Spokane.
www.spokesman.com
January 9, 2026 at 5:32 PM
Health alert as ‘super flu’ variant detected in Argentina | Buenos Aires Times
www.batimes.com.ar
December 22, 2025 at 12:35 PM
[H3N2] Canada: The Children’s Hospital of Eastern Ontario reported that three young children have died as a result of influenza A complications in the first two weeks of December. www.seekyoursounds.com/news/toronto... #ClimateCrisis #Flu #Mutation #H3N2 #SubcladeK #MaskUp #Ontario #Canada
3 children dead from flu complications in two weeks: CHEO | Seekr
www.seekyoursounds.com
December 15, 2025 at 5:56 PM
Masks will be essential: this year's flu is not one considered for this year's vaccine, and is deemed more severe than recent flu viruses. Hospitalization curve is much steeper than recent flu's.
#InfluenzaH3N2
#SubcladeK
Flu season in the US is heating up, driven by new subclade K variant | CNN
The latest data on respiratory illness in the United States shows that shoppers and merry-makers are spreading more than just holiday cheer: They’re also passing around germs. In many cases, it’s a ne...
www.cnn.com
December 17, 2025 at 5:51 AM
Brace for impact, e.g. get vaccinated: "In the UK...almost all recent cases (98%) have been #influenza A...among those around 84% are H3N2. Of these, around 87% are subclade K." #vaccines #PublicHealth #subcladeK
gavi.org Gavi @gavi.org · Nov 19
Flu season is due to peak soon in the Northern Hemisphere and a new variant – known as subclade K – is gaining ground. How well will seasonal flu vaccines stand up against this subclade? Linda Geddes explains: bit.ly/3JIQYaJ
Everything you need to know about ‘subclade K’ flu - and vaccine protection against it
As a new branch of H3N2 influenza gains ground, we explore what it means for this season’s flu vaccine.
bit.ly
November 19, 2025 at 8:29 AM
MSN
tinyurl.com
January 30, 2026 at 12:51 PM
The US may get its second severe #flu season, driven by a mutated strain called #subcladeK behind early surges overseas.  Last winter the US had its highest rates of flu hospitalizations in nearly 15 years. At least 280 children died, the most since 2004.
www.cnn.com/2025/11/18/h...
A new virus variant and lagging vaccinations may mean the US is in for a severe flu season | CNN
The United States may be heading into its second severe flu season in a row, driven by a mutated strain called subclade K that’s behind early surges in the United Kingdom, Canada and Japan.
www.cnn.com
November 23, 2025 at 3:25 PM
🧪 Kids need #Flu #Influenza #vaccine 💉 Need to watch out for #influenza #subcladeK - immune evasion - may not protect against infection but should protect against severe disease 🦠
November 16, 2025 at 6:59 PM
There were fears 2025-26 might be a bad #flu year because of a new #H3N2 variant called subclade K. Looks like the jury is in; it is making a lot of people sick. (The timing surely contributes.) NY State has never recorded as many flu cases in 1 week as it has now. www.statnews.com/2025/11/20/f...
December 31, 2025 at 11:32 PM
#Flu season in the United States is heating up ...

| #Influenza | #pathogen | #subcladeK | #variant | #publichealth | By @reportergoodman.bsky.social via @cnn.com
www.cnn.com
December 15, 2025 at 2:00 AM
It all continues to point towards a strong #Influenza season in NH due to #subcladeK "...countries should be prepared for increased demands on their healthcare systems". Wear mask if sick and although #vaccine effectiveness is not ideal, some protection is better than none.
#PublicHealth #Flu
@eurosurveillance.org paper by Ian Barr, et al on
• near-global spread of influenza A(H3N2) subclade K
• record case numbers in Australia/New Zealand
• high transmissibility, but no evidence of increased severity
• influenza antivirals still effective

www.eurosurveillance.org/content/10.2...
December 15, 2025 at 9:46 AM
#Flu is #rising #rapidly, driven by a #new #variant. Here's what to know

Flu cases are rising across the U.S. due to the H3N2 #subcladeK variant. Vaccines offer partial protection against severe illness, and experts urge shots as holiday travel grows scitechupdates.com/f...
January 14, 2026 at 7:39 AM
Some #flu symptoms are changing as a new variant spreads rapidly. What to expect

As cases reach "very high" levels in Illinois, a mutated and highly contagious variant known as #subcladeK has brought a change in telltale signs of the virus, experts have said.

www.nbcchicago.com/news/local/s...
Some flu symptoms are changing as a new variant spreads rapidly. What to expect
A new flu variant fueling a fast-paced rise in cases across the state has brought with it some symptoms unlike those many have come to associate with the virus.
www.nbcchicago.com
January 7, 2026 at 7:40 PM