2025年1月28日 · Flu, also called influenza, is an infection of the nose, throat and lungs, which are part of the respiratory system. The flu is caused by a virus. Influenza viruses are different from the "stomach flu" viruses that cause diarrhea and vomiting. Most people with the flu …

What is the flu (influenza)? The flu is an illness you get from the influenza virus. It causes symptoms like head and body aches, sore throat, fever and respiratory symptoms, which can be severe. Flu is most common in winter months, when many people can get sick at once (an epidemic). Cleveland Clinic is a non-profit academic medical center.

2023年8月28日 · It's a super-contagious virus that can make you feel miserable. Doctors call it influenza. Its symptoms are usually more serious than the sneezes and stuffy nose that you tend to get from a...

Influenza (flu) is a contagious respiratory illness caused by influenza viruses that infect the nose, throat, and lungs. Learn about flu, including symptoms, prevention methods, and treatment options.

2024年8月26日 · Learn about identifying flu symptoms, how the diagnosis works, common complications, and more.

2024年9月18日 · Understanding the stages of the flu—including the signs and symptoms that are likely to develop—can help you determine if you are recovering as you should. It can also help you figure out if you are still contagious and able to infect others. Day 0 …

2025年3月3日 · Flu is caused only by the influenza virus, which tends to be more severe than common colds and more commonly causes a fever. Many of the signs and symptoms for flu, COVID-19 and other respiratory viruses are the same and can range from mild coldlike symptoms to pneumonia and respiratory distress.

2024年8月30日 · Most people with flu have mild illness and do not need medical care or antiviral drugs. If you get sick with flu symptoms, in most cases, you should stay home and avoid contact with other people except to get medical care.

2025年1月28日 · Learn more about how to get your flu shot at Mayo Clinic. To diagnose the flu, also called influenza, your healthcare professional does a physical exam, looks for symptoms of flu and possibly orders a test that detects flu viruses.

Influenza, also called flu, is a respiratory disease. It is caused by flu viruses that infect the nose, throat, and lungs. Flu can cause moderate to severe illness, including death. Some people, including young children, older adults, pregnant people and people with certain health conditions, are at higher risk of becoming very sick.