Doctors reveal troubling signs in early flu trends, warn of ‘unusually bad’ season

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This year’sflu seasonis already raising alarms among public health officials and infectious disease experts.

According to the BBC, the U.K.’s National Health Service (NHS) has issued an “SOS” warning amid growing concern that this winter could bring one of the most severe influenza waves in recent memory.

“This flu season is going to be unusually bad,” Dr.“Britain is getting hit earlier and harder, with cases triple compared to last year.”

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Australia reportedly experienced its worst-everflu seasonin 2024, a pattern that has often foreshadowed what’s to come in the Northern Hemisphere.

In the United States, early indicators point in that same direction.

Person getting a flu shot closeup of needle

Australia reportedly experienced its worst-ever flu season in 2024, a pattern that has often foreshadowed what’s to come in the Northern Hemisphere.(iStock)

Dr.Ravi Jhaveri, professor of pediatrics at the Northwestern University Feinberg School of Medicine and division head of pediatric infectious diseases at Ann &Robert H.Lurie Children’s Hospital of Chicago, said “there are signs of early flu activity in segments of the country,” adding thatvaccination rateshave continued to fall since the pandemic.

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According to the BBC, the U.K.’s National Health Service has issued an “SOS” warning about this year’s flu season.(iStock)

“Meanwhile, the vaccines contain strains that are multiple years out of date,” Glanville cautioned.“They contain a mix of a 2021 strain, a 2022 strain and a 2023 strain.This means the flu shots are mismatched tothe virus.”

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The current strain also has a history of producing more severe illnesses and higher hospitalization rates, according to the doctor.Meanwhile, the virus continues to mutate, making it harder for immune systems to recognize.

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“The flu virus is constantly mutating in small amounts to evade our immune system,” Jhaveri noted, which is the main reason new vaccines are developed each year.

The virus seems to be spreading earlier than usual this year, and researchers aren’t entirely sure why.

A woman sits on a park bench and holds a handkerchief

The current strain of flu has a history of producing more severe illnesses and higher hospitalization rates.(Elisa Schu/picture alliance via Getty Images)

Jhaveri noted that while the timing of the flu season can vary from year to year, there may now be a shift in how differentrespiratory virusesinteract.

“Now that we have more prevention options for RSV, the overall respiratory virus pattern may have shifted.”(iStock)

Flu immunity may also be weaker this year.As Jhaveri pointed out, immunity “increases after vaccination and natural infection” but wanes over time, especially inolder adults.

Still, based on Australia’s data, “we think the vaccine should offer the usual levels of protection,” he said.

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High-risk individuals — including those with chronic conditions, weakened immune systems or obesity, as well as pregnant women and young children — should take extra caution.

“About half thechildren who die from fluand flu-related complications have no prior risk factor,” Jhaveri noted, emphasizing that vaccination remains “the first step in preventing flu.”

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