Why is the flu so bad this year? Understanding the surge and how to stay safe.

Factors behind flu season 2024-2025: what’s different this year?

According to an NBC News analysis of CDC data, cases of influenza-like illnesses in doctors' offices and urgent care centers are higher than they’ve been in at least 28 years—since the CDC first began tracking this information (NBC News).

But why is the flu so much worse this year?

Every flu season is unique, but several key factors are making this one particularly intense:

• Lower vaccination rates. Flu shot uptake remains below the CDC’s goal of 70%, with only about 44% of adults and children vaccinated so far. Fewer people with immunity means the virus spreads more easily.
• More aggressive flu strains. The circulating flu viruses appear to be causing longer-lasting symptoms and more severe illness in some individuals.
• Increased social gatherings. With people spending more time indoors, especially in colder months, the flu virus has more opportunities to spread in workplaces, schools and public spaces.
• Weakened immunity. Some experts believe that waning immunity from previous flu seasons could make more people vulnerable to infection.

These factors create the perfect storm for a tough flu season in 2025, making prevention even more important.
 

How to protect yourself from this year’s aggressive flu strain.

The flu is still lingering into spring, but you can still take steps to protect yourself and your loved ones. 

Here’s how:

• Get your flu shot. If you haven’t been vaccinated yet, it’s not too late. The flu season isn’t over and the shot can still help prevent severe illness. CityMD provides flu shots at its locations.
• Wash your hands often. Flu viruses can survive on surfaces for hours, so frequent handwashing reduces your risk of infection.
• Avoid close contact with sick individuals. If someone around you is coughing, sneezing, or feeling unwell, keep your distance and encourage them to rest at home.
• Boost your immune system. Eating well, staying hydrated and getting enough sleep can help your body fight off infections.
• Consider wearing a mask in crowded places. If flu activity is high in your area, a mask can add an extra layer of protection, especially in public spaces.
• Seek medical care if symptoms worsen. If you experience high fever, difficulty breathing, or persistent symptoms, visit CityMD for quick, expert care.

How long will the 2025 flu season last? What to expect in the coming weeks.

Flu season typically peaks between December and February, but with cases still spreading, this year’s wave could extend well into spring. 

The combination of low vaccination rates and an aggressive flu strain means that outbreaks could continue for several more weeks—especially in areas with high transmission rates. Tragically, over 13,000 flu-related deaths have been reported this season so far, underscoring just how serious this year’s outbreak has become.

If you haven’t caught the flu yet, getting vaccinated, practicing good hygiene and avoiding close contact with sick individuals can help keep you flu-free as the season continues.
 

How do this year’s flu symptoms compare to previous seasons?

While fever, chills, cough, sore throat and fatigue are common flu symptoms every year, many patients are reporting longer-lasting illness this season. 

Doctors are also seeing:

• Severe fatigue and body aches that linger for days
• Higher fevers than usual
• A prolonged cough that lasts even after other symptoms improve
• More cases of flu-related complications, such as pneumonia and bronchitis

If your symptoms aren’t improving after a few days or you’re experiencing difficulty breathing, chest pain, or dehydration, it’s time to seek medical care.
 

When should you see a doctor for the flu?

You can manage most flu cases at home with rest, fluids and over-the-counter medications. However, some cases require medical attention. 

Visit a doctor or urgent care if you experience: fever, cough, congestion, trouble breathing, chest discomfort, especially if symptoms do not resolve after several days. If there is severe trouble breathing, severe chest pain, persistent vomiting, dehydration or change in mental status, you need to be evaluated in the emergency department immediately. 

If you’re at higher risk—such as older adults, young children, or those with chronic health conditions—seek care early to prevent complications.

Need flu care fast? CityMD has you covered.

Flu season isn’t over, but you can still take steps to protect yourself. Whether you need a flu shot, testing, or treatment, CityMD is here to help. Our urgent care centers offer fast, expert flu care—no appointment needed.

Don’t wait—walk in today and stay ahead of the flu!