Loafman said even those who have already had the flu should consider getting the vaccine if they haven’t already as the risk for reinfection also exists. Children between the ages of 5 and 17 are most impacted by hospital admissions related to acute respiratory illnesses and the flu. But with the new variant, doctors have reported more instances of adults experiencing GI issues. “This new strain has symptoms of really high fevers. It has a really bad cough that won’t go away, very phlegmy, and also vomiting and diarrhea and lots of joint aches as well as muscle aches,” Mora said. Health officials said Monday flu activity is “very high” in Illinois as the state reported its first child death from the flu.

Flu symptoms to know

There are no rules about when you can or can’t get a vaccine, but professionals typically recommend getting your shot in September or October. “The flu reporting year uses standard reporting weeks outlined by the Centers for Disease Control and Prevention (CDC), where every year has 52 or 53 reporting weeks. It can last from a few days to two weeks, according to the Cleveland Clinic. According to the CDC’s FluView Interactive Map, which monitors visits for respiratory illness with fever plus a cough or sore throat, Florida is seeing low activity. H3N2 symptoms include fever, chills, body aches, headache, extreme fatigue, congestion or runny nose, and coughing.

How Subclade K Compares to Typical Flu Strains

Along with routine symptoms, the flu can bring on other complications. It is possible for an infected person to spread the flu before their symptoms begin, and those without symptoms to spread the flu, too. As flu cases rise nationwide, it’s important to know what symptoms to look out for and how to keep yourself and others safe.

Because the new strain is bringing higher and longer lasting fevers, Mora said it’s important to know the warning signs to seek medical attention. Rose O’Keeffe, a Chicago resident who recently recovered from the flu, said she experienced a fever every single day, a rollercoaster of body aches and congestion. “There are three strains going around and probably a few more. So you can still be protected from the future,” he said. Data shows that the spike in illnesses is having a serious impact on residents under the age of 18. Dr. Santina Wheat, a family physician with Northwestern Medicine, shared similar thoughts in an interview with NBC Chicago, explaining an uptick in cases might occur within the next week as children head back to school. He suggests using an at-home test if you suspect you might have flu.

Influenza viruses naturally change over time through small genetic mutations. The flu can cause mild to severe illness, which can lead to death in certain cases. To start, experts strongly recommend receiving a flu shot, as it is the most effective way to prevent serious illness from the flu.

The subclade K flu strain is a newly identified variant of the influenza A (H3N2) virus. Influenza viruses can be detected in most infected people as soon as vegas casino download one day before symptoms develop and up to five to seven days after becoming sick. CDC data shows flu activity continues to climb across the United States, with most the season’s cases linked to a newer flu strain, subclade K, reports ABC News.

Some flu symptoms are changing as a new variant spreads rapidly. What to expect

Because it is structurally different, subclade K may also be better at dodging immune systems that have already built up protections against more familiar strains. A new mutation, called subclade K, continues to drive the spread, with some experts warning that it could supercharge the season. Hospitalizations increased a whopping 48% week-over-week, amounting to 120,000 hospitalizations and 5,000 deaths so far this season.

How long does the flu last? Symptoms to look out for as US cases rise

• Dr. Santina Wheat, a family physician with Northwestern Medicine, shared similar thoughts in an interview with NBC Chicago, explaining an uptick in cases might occur within the next week as children head back to school.
• Hospitalizations increased a whopping 48% week-over-week, amounting to 120,000 hospitalizations and 5,000 deaths so far this season.
• Most people who get the flu will recover in a few days to less than two weeks.
• There are no rules about when you can or can’t get a vaccine, but professionals typically recommend getting your shot in September or October.
• Additionally, 90.5% of the 389 H3N2 viruses sent for further testing during that time were subclade K.

When doctors describe Subclade K as severe, they are not suggesting it is a completely new or unknown virus. This global pattern is one reason public health officials are taking the variant seriously. Early data suggests this variant has accumulated mutations that may help it spread more easily or partially evade existing immunity. When these changes add up, they can create a new subclade that behaves differently from earlier strains. A flu virus infection of the respiratory tract can trigger an extreme inflammatory response in the body, leading to sepsis. Pneumonia is a serious complication resulting from either flu virus infection alone or the co-infection of flu virus and bacteria, according to the CDC.

How many flu cases were reported nationwide?

For the first time since 1997, when flu data was first tracked, 8% of visits to medical professionals were related to the flu or a flu-like illness the week ending Dec. 27, according to the CDC. Flu activity is exploding across the United States this flu and cold season, in some cases reaching record highs, according to new Centers for Disease Control and Prevention data. Again, health officials warn that GI symptoms are increasing, particularly in adults, with the new strain, however.

Keeping Your Health & Time in Mind.

Loafman and Mora agreed, saying while this season’s flu vaccine was not formulated specifically for the new variant, it will still help prevent against more severe illness. “Children with flu do often have GI symptoms – nausea, vomiting – adults less often, but we are seeing anecdotally more signs of some GI illness for the adults who have the subclade K strain of flu,” Loafman said, adding that he “wouldn’t exclude flu if you have GI symptoms and have the other symptoms like body aches, fever, upper respiratory symptoms.” Peak influenza activity in the U.S. is usually between December and February with some viruses active through early spring, per the CDC. It is a mutated strain of influenza A H3N2, which has already shown resistance to current vaccines, health officials say.

Even though an early start can sometimes raise questions about a virus’s ability to transmit itself, experts believe it does not automatically mean a worse flu season. Subclade K – which has spread to most parts of Europe as well – was first detected in Norway, followed by the UK, where the influenza season started 4 to 5 weeks earlier than usual. While the CDC says it is too soon to know how severe this season will be, the variant can lead to serious illness. The variant was first spotted in June, and it was then noticed that it was expanding rapidly during the Southern Hemisphere’s flu season and in several Northern Hemisphere countries. Subclade K is a newly emerged subgroup of a well-established human seasonal flu virus known as the H3N2 influenza A virus, which has circulated for decades.

“For most people who need only one dose of influenza vaccine for the season, September and October are generally good times to be vaccinated against influenza,” the CDC says. A new strain of influenza has surged across the country during an already busy travel season, with experts worried that low vaccination rates could lead to a significantly brutal flu season. Although the vaccine is not an exact match, experts say it will still offer protection against the influenza virus. While overall influenza activity across the U.S. remains relatively low, it is increasing among children and young adults, according to the latest report from the Centers for Disease Control and Prevention.

“Again, we recommend wearing a mask around anybody who’s vulnerable or if you’re in a crowded place for that first seven days. And, you know, absolutely great hand washing hygiene so you’re not spreading the virus around. And if you can stay in, stay home.” “It’s about five to seven days from the symptom onset before you stop really shedding high levels of the virus. So 10 days is perfect, but it really doesn’t need to be that long,” Loafman said. Flu symptoms typically begin within one to four days of exposure, according to the Cleveland Clinic. In Chicago, residents can get a flu shot by visiting any one of the city’s immunization clinics. “I kept putting it off and I wish I hadn’t because both my parents who I live with right now had the flu shot and didn’t get sick, luckily,” she said.

Staying informed and prepared is the most practical response to emerging variants. However, experts continue to stress that flu vaccination remains the best defense. Current vaccines were developed before Subclade K became widespread, which means the match may not be perfect. Beyond complications, the flu can cause chronic medical problems like asthma or chronic heart disease to worsen Young children and people with weakened immune systems may be contagious for longer periods of time. Flu season typically begins around late September or early October, when temperatures start to cool, and usually lasts until the following summer, in May.

Dubbed the “super flu,” the latest influenza strain, Subclade K (A(H3N2), J.2.4.1), is a mutation of the influenza virus. Each year, the seasonal flu shot is formulated to target the strains most commonly circulating. A new flu strain that has been dominating cold and flu season overseas has also taken over in the U.S.

‘Super flu’ skyrockets over holidays. What are the symptoms of H3N2?

The key difference lies in how widely and quickly the virus spreads and how many people become sick at the same time. Many readers wonder if this new flu variant feels different from past flu infections. Some people, especially older adults, may experience more intense fatigue or complications such as pneumonia. Severity here refers more to the potential impact on healthcare systems and vulnerable groups than to dramatically different symptoms in every patient.

They stress that this year’s vaccine isn’t totally useless against subclade K and can still prevent serious illness. According to USA TODAY, health officials have expressed concern that the current flu vaccine may not be a perfect match for the new H3N2 mutation. Additionally, 90.5% of the 389 H3N2 viruses sent for further testing during that time were subclade K. The CDC also noted that flu activity was “very high” in the Northeast the week ending Dec. 27, including in New York, Massachusetts and North Carolina.

New K Variant Flu Outbreak: Rapid Spread, Fever, and Rising Risk of Lung Damage Explained

To start, experts highly recommend getting a flu shot, considering it the most effective way to prevent serious illness from the flu. It is not possible to predict what each flu season will be like in Florida.” The organization has noted that it is not yet clear whether the new flu strain is causing more infections or more severe cases.

Most flu cases can be managed at home, but some symptoms require medical attention. Wear a mask in crowded indoor spaces if flu activity is high in your area. Vaccination is particularly important for high-risk individuals, including older adults, young children, pregnant people, and those with chronic medical conditions.

How This Fits Into the Bigger Flu and Virus Picture

• “It’s about five to seven days from the symptom onset before you stop really shedding high levels of the virus. So 10 days is perfect, but it really doesn’t need to be that long,” Loafman said.
• Many readers wonder if this new flu variant feels different from past flu infections.
• “Again, we recommend wearing a mask around anybody who’s vulnerable or if you’re in a crowded place for that first seven days. And, you know, absolutely great hand washing hygiene so you’re not spreading the virus around. And if you can stay in, stay home.”
• As cases reach “very high” levels in Illinois, a mutated and highly contagious variant known as “subclade K” has brought a change in telltale signs of the virus, experts have said.

Protecting yourself from the severe flu strain Subclade K involves the same proven steps used during past flu seasons, with extra attention to consistency. Compared to milder flu seasons, a strain like Subclade K may lead to higher rates of doctor visits, hospitalizations, and missed work or school days. Finally, early flu seasons driven by new variants often lead to more widespread illness before immunity builds up in the community.

Japan also witnessed an early start, as the levels of H3N2 flu are now plateauing and may soon start to drop. Doctors say it causes extremely high fever, along with signs of a cold and flu. But they are different enough to evade some of the protection from this year’s vaccine. Subclade K’s mutations are not enough of a change to be considered an entirely new kind of flu. That includes at least eight child deaths and is based on data as of Dec. 20, before major holiday gatherings.

However, it is still not too late to get a flu shot, which, according to the doctors, can still prevent severe illness even if someone gets infected. Even when vaccines are not an exact match, they still reduce the risk of severe illness, hospitalization, and flu-related complications. Because international travel plays a major role in virus spread, experts expect Subclade K to continue appearing in new locations as the flu season progresses. Some countries have reported that this strain is becoming more common than other circulating flu viruses. Understanding the subclade K flu strain, how it spreads, and what symptoms to watch for can help you take the right precautions.