Cases of Super Flu Are Surging—What To Know About the New Flu Strain and Symptoms
A top doctor explains how to take the illness from ‘wild to mild’
A more severe and highly contagious new strain of the flu is circulating this season. It’s called subclade K, or more popularly “super flu.” “This has the potential to be a pretty bad respiratory season overall,” reported public health emergency expert Jay Reddy, MD, with cases of the flu and RSV spiking simultaneously. Here’s everything you need to know about protecting your health and treating 2025 super flu symptoms.
What is the ‘super flu,’ the new flu strain?
Three main types of flu strains tend to circulate every winter and this season, an evolved form of the H3N2 Influenza A strain seems to be dominating the scene. This variant, called subclade K or super flu, is stronger than usual and is peaking earlier in the season, especially in the United Kingdom, explains public health expert and infectious disease specialist Tyler B. Evans, MD, MS, MPH, CEO and co-founder of Wellness Equity Alliance.
Why the super flu is so powerful
“The subclade K strain will certainly be an issue in the US this flu season,” says Dr. Reddy, Chief Science Officer of HealthTrackRx. “CDC data from the second week of December shows that subclade K accounted for approximately 80 percent of all confirmed influenza positive cases.” He adds, “The subclade K strain has seven distinct mutations, and these mutations allow the virus to evade immune protections from prior vaccinations or influenza infection.”
Woman's World Answers
In fact, U.K. hospitalizations rose 55 percent in just one week in December, says the National Health Service of England, describing this “worst case scenario” super flu surge. And this subtype of the influenza virus has hit the U.S., with flu cases up 80 percent in New York state.
Flu A symptoms: What to watch for with the super flu
The symptoms of the new flu strain are similar to the regular flu, but are more intense, more contagious and have a speedier onset. Super flu symptoms include:
• High fever
• Aches and pains
• Fatigue
• Cough and sore throat
• Runny nose or sinus pressure
• Headaches
• Chills and sweating
• GI issues such as diarrhea and vomiting
• Trouble sleeping
• Loss of appetite
Does the flu shot protect against the super flu?
Why are we seeing a flu surge this year? Dr. Evans, who has worked on the front lines of major disease outbreaks and also led New York City’s Office of Emergency Management’s COVID medical response, says, “This strain could cause a more severe flu season because of its divergence from forecasted viruses used in this season’s flu vaccine.” In other words, this strain is not well matched for this year’s seasonal influenza vaccine.
But even without a perfect match, “The flu vaccine remains the best defense against this and many of the other flu viruses that will circulate this season,” Dr. Evans says. “Early research shows that this year’s flu shot still works to protect people from getting really sick from this new flu virus—but the season is young.”
How to treat super flu symptoms
In addition to the flu vaccine, Dr. Evans says, “The new subclade K virus is susceptible to flu antiviral medication, which should be prescribed as indicated.” These include medications like Tamiflu, taken within 48 hours of the start of symptoms to help shorten the length of the illness and reduce potential complications.
Dr. Evans adds, “If you start feeling sick with symptoms like fever, cough or body aches, please let your healthcare provider know right away. Starting treatment early can make a big difference in how quickly you recover.” Getting rest and staying hydrated can help speed recovery from this new flu strain, too. These steps are especially key for at-risk populations, including children, older adults and those with compromised immune systems. People with underlying preexisting medical conditions including COPD and diabetes are also at an increased risk of flu-related complications.
But don’t suffer in silence. Around 88 percent of Americans have had respiratory symptoms in the last year. But some 47 percent of people say that the price of medical care kept them from seeking help, while 14 percent did not see a healthcare provider at all when they were ill, according to a respiratory season trends survey conducted by HealthTrackRx.
To get free health advice if your budget is tight, consider these avenues:
- Ask a pharmacist to answer your health questions
- Check MedlinePlus, the National Institutes of Health’s website, full of free information
- Call the largest hospital near you and ask about free health clinics in your area
- Seek out telehealth services that provide free or low-cost pay-per-visit virtual calls
Take precautions now against the super flu
Looking ahead, Dr. Evans says, “It’s not too late to get your flu shot. As long as the flu is still going around, getting vaccinated can help protect you.”
He adds, “If you get your flu shot, it can turn a serious illness into a much milder one—even if it doesn’t completely stop you from catching the flu. This is true for all the flu viruses. Think of the vaccine as taking the flu from ‘wild to mild.’ It helps prevent severe illness, even if you still get infected. It really helps to tame the beast!”
Dr. Reddy also recommends the following precautions: “Avoid others when they are sick, maintain good hand hygiene especially in a public setting, and stay home when you or a family member is sick.”
The bottom line: Dr. Evans says, “Some protection is much better than none.”
Conversation
All comments are subject to our Community Guidelines. Woman's World does not endorse the opinions and views shared by our readers in our comment sections. Our comments section is a place where readers can engage in healthy, productive, lively, and respectful discussions. Offensive language, hate speech, personal attacks, and/or defamatory statements are not permitted. Advertising or spam is also prohibited.
