Flu season is currently affecting many areas across the United States.

Reports from various sources, including wastewater analysis and hospital admissions, indicate a rise in flu virus activity throughout much of the U.S. The Centers for Disease Control and Prevention estimates that over 160,000 individuals have been hospitalized due to flu-related issues this season, and more than 6,600 have died.

The situation might worsen soon, as February is typically the month with the highest flu cases in the U.S., according to the CDC.

In addition to the flu, other respiratory viruses like the common cold, RSV, and COVID-19 are also prevalent in winter.

Here’s what you should know about flu symptoms in 2025, how to distinguish it from other illnesses, and ways to protect yourself:

What are the symptoms of the flu?

• Fever, chills, or feeling feverish;
• Cough;
• Sore throat;
• Runny or stuffy nose;
• Muscle aches or body pains, and fatigue;
• Headache;
• Vomiting or diarrhea, more common in children.

Given these symptoms, it can often be challenging to identify if you have a cold, the flu, or COVID-19 without a specific test to confirm your illness.

Is it the flu or another virus?

However, there are some distinguishing factors.

As noted by the Mayo Clinic, COVID-19 symptoms might develop later than those of a cold or flu. Colds generally do not cause fever or headaches, while these symptoms are typical of flu and COVID-19. Additionally, symptoms like muscle aches and fatigue are more associated with flu and COVID-19 than with a common cold.

A dry cough is more indicative of COVID-19 compared to the flu.

Respiratory syncytial virus (RSV) usually presents mild cold-like symptoms that resolve on their own, but it can be serious for infants, very young children, and elderly individuals.

How does the flu transmit?

The flu mainly spreads through droplets that are released when someone who is infected coughs, sneezes, or talks. You can also become infected by touching surfaces contaminated with these droplets and then touching your nose, mouth, or eyes.

How can I avoid catching the flu?

Getting the flu vaccine is essential for everyone aged 6 months and older, as emphasized by Dr. Eduardo Azziz-Baumgartner, a medical epidemiologist in the CDC’s Influenza Division. While the vaccine may not guarantee that you won’t get sick, it significantly lowers the risk of severe illness.

Adopting simple hygiene practices can effectively curb the spread of germs. Regular handwashing with soap and water, covering your coughs and sneezes, and refraining from touching your face are important, according to the CDC.

It’s also wise to steer clear of those who are unwell. If you feel sick, the CDC advises you to remain at home until your symptoms are improving and you have been fever-free for 24 hours.

Antiviral medications prescribed by a healthcare provider can alleviate flu symptoms and are most effective when taken within a few days of symptom onset.

If you must go out or be around others while you’re sick, wearing a face mask like an N95 or KN95 can help prevent the spread of the flu virus.

Eduardo Cuevas covers health and breaking news.