Flu season 2025: Subclade K variant known as 'Super K' showing fast flu symptoms amid holiday gatherings

This flu season is intensifying at an alarming rate, health officials warn, as the virus continues to spread relentlessly. The uptick in cases comes in the wake of holiday gatherings, which provided a fertile ground for infections to proliferate.

ABC7 Chicago is now streaming 24/7. Click here to watch

Recent figures from the Centers for Disease Control and Prevention (CDC) reveal a staggering increase, with nearly five million flu cases reported nationwide. Although the flu is making its presence felt across the United States, not all states are equally affected.

Illinois, for instance, reports lower infection rates compared to many other regions. Meanwhile, New York is grappling with what is classified as ‘high’ respiratory illness activity. States such as Alabama, Colorado, Connecticut, Hawaii, Louisiana, Maryland, Minnesota, New Hampshire, New Jersey, Ohio, Rhode Island, and Texas are experiencing ‘moderate’ levels of flu activity. The remaining states are fortunate to have low or very low levels of flu cases at this time.

In related news, a poignant story from Michigan highlights the severity of the flu’s impact. A young boy, who underwent amputation of his legs following a severe flu case, is now sharing his experience and urging everyone to get vaccinated. His story serves as a stark reminder of the potential consequences of this illness and the importance of preventive measures.

New York is seeing ‘high’ respiratory illness activity. Alabama, Colorado, Connecticut, Hawaii, Louisiana, Maryland, Minnesota, New Hampshire, New Jersey, Ohio, Rhode Island, and Texas are seeing ‘moderate’ activity. All other states are seeing low or very low levels.

READ ALSO | Michigan boy whose legs were amputated after severe flu case shares story, urges all to get vaccine

While this year’s flu seems similar to previous years, including symptoms like high fever, body aches and fatigue, doctors said this year’s strain is showing more vomiting in children and symptoms are coming on faster and more intensely.

The bulk of this year’s cases are being linked to a new variant known as subclade K.

Doctors say the flu shot will still help reduce your risk of severe illness. However, fewer Americans have been vaccinated this year.

“It’s a good idea to go and swab and get tested, because you might be able to take an antiviral such as Tamifu for influenza, as long as you start that quickly, usually within 48 hours of symptoms,” ABC News medical contributor Dr. Alok Patel said.

The CDC recommends everyone over the age of 6 months get their flu shot.

ABC News contributed to this story.

READ ALSO | Chicago-area health officials expect bad flu season, push for vaccinations despite federal guidance

You May Also Like

Gale Brewer rips Mamdani’s affordable-housing fast-track plan: ‘He doesn’t know anything’

Gale Brewer Slams Mamdani’s Affordable Housing Fast-Track Plan: ‘He Doesn’t Know Anything’

Democratic City Councilwoman Gale Brewer sharply criticized Mayor Zohran Mamdani on Monday,…
Charlie Kirk murder suspect's ex-roommate can't testify at hearing, judge rules

Kirk Killing Suspect Faces Aggravated Murder Trial in June 2028

Tyler Robinson, who is accused of assassinating conservative activist Charlie Kirk, is…
Quiet serial killers may hide in plain sight as DNA unmasks dead 1970s Pennsylvania strangler, expert says

DNA Identifies Dead 1970s Pennsylvania Strangler, Raising Fears of Hidden Serial Killers

A Pennsylvania man identified decades after two women were killed may not…
NTSB recovers cockpit voice recorder from Learjet crash site in Florida

NTSB Recovers Cockpit Voice Recorder From Florida Learjet Crash Site

The National Transportation Safety Board (NTSB) said Monday that investigators have recovered…
This 2014 image provided by NASA shows a Taurid fireball recorded at the NASA All Sky Fireball Network station in Tullahoma, Tenn. (NASA via AP)

Taurid Meteor Shower May Bring Bright Shooting Stars This Week

The Northern Taurid meteor shower is set to reach its peak by…
Senior US Army soldier arrested in UK on suspicion of spying for Russia

Senior US Army Soldier Arrested in UK on Suspected Russia Spying

A senior U.S. Army soldier was arrested in England on Tuesday on…
Brave Utah teen held captive for a year escaped using popular online video game

Utah Teen Escapes After a Year in Captivity Using Online Game

A teenager who was allegedly abducted by a sexual predator and held…
American girl, 7, killed during Mexican cartel operation; mother blames police helicopter: report

American Girl, 7, Killed in Cartel Raid; Mother Blames Helicopter

A 7-year-old girl who held dual U.S. and Mexican citizenship was shot…
ICE arrest criminal illegl alien who drove flashy cars and partied with naked models

ICE Arrests Undocumented Immigrant With Criminal Record Accused of Flashy Cars, Nude-Model Parties

Federal Immigration and Customs Enforcement agents have detained the Iranian social media…
LA mayor-elect Nithya Raman exits council with a warning

LA Mayor-Elect Nithya Raman Leaves City Council With a Warning

Mayor-elect Nithya Raman said goodbye to the Los Angeles City Council on…
Elizabeth Siders, Ohio ‘house of horrors’ mom of 16, pregnant again as she’s ruled competent to stand trial

Ohio ‘House of Horrors’ Mom Elizabeth Siders Fit for Trial

The Ohio mother at the heart of a disturbing “house of horrors”…
Massie introduces impeachment articles against Hegseth, teeing up vote this week

Rep. Thomas Massie Files Impeachment Articles Against Hegseth

Washington — Rep. Thomas Massie on Monday filed articles of impeachment against…