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By Gabe Whisnant
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Health officials are warning about a surge in so-called “super flu” cases as a particularly aggressive strain drives higher-than-usual hospitalizations this season. Patients are reporting intense symptoms that can escalate quickly, especially among older adults, young children, and those with weakened immune systems.
Early hospital reports show that more New Yorkers sought emergency care for flu-related complaints in the week ending December 20 than in any comparable week over the past 10 years, the New York Times reported Friday. The city’s emergency room monitoring system logged nearly 10,000 visits for influenza-like illness, surpassing peaks seen during even the most severe flu seasons of the past decade.
What is 'Super Flu?'
While the illness resembles traditional influenza, doctors say its severity and longer recovery time set it apart.
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Reported symptoms include high fever, severe body aches, extreme fatigue, persistent cough, sore throat, and headaches that are often more intense than with typical flu cases. Some patients also experience shortness of breath, chest pain, gastrointestinal issues, and prolonged weakness that can last weeks after the acute illness subsides.
Experts stress that early treatment, vaccination, and knowing when to seek medical care are critical as cases continue to rise.
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Flu Treatments: What To Know
Health officials say antiviral medications remain a key tool for treating influenza, particularly for people at higher risk of severe illness. The Centers for Disease Control and Prevention (CDC) recommends several prescription antivirals that can shorten the duration of symptoms, reduce complications and lower the risk of hospitalization when started early, ideally within 48 hours of symptom onset.
Tamiflu (oseltamivir) is the most commonly prescribed flu antiviral and is approved for patients as young as 2 weeks old. Taken orally for five days, it works by limiting the virus’s ability to spread in the body and is widely used for both treatment and prevention in certain cases. Relenza (zanamivir), which is inhaled, works in a similar way but is generally reserved for patients without underlying respiratory conditions such as asthma.
For patients who cannot take oral or inhaled medications, Rapivab (peramivir) offers an intravenous option, typically given as a single dose in a hospital or clinical setting. Another newer treatment, Xofluza (baloxavir marboxil), is a single-dose oral medication that targets viral replication and may be easier for some patients to complete.
The CDC emphasizes that antivirals are not a substitute for vaccination but can be an important complement, especially during severe flu seasons. Patients experiencing flu symptoms are advised to contact a health care provider promptly to determine whether antiviral treatment is appropriate.
The CDC and medical professionals say staying well hydrated and getting adequate rest are critical parts of recovering from the flu. Flu symptoms such as fever, sweating and reduced appetite can lead to dehydration, making fluids like water, broth and electrolyte drinks especially important. Doctors also recommend limiting activity and getting plenty of sleep, noting that rest helps the immune system fight the infection and can reduce the risk of complications.
Update: 12/26/25, 3:11 p.m. ET: This article is updated with new information.
Update: 12/26/25, 5:57 p.m. ET: This article is updated with new information.
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