Not to be confused with Flue or Common cold. Influenza, commonly known as the flu, is an infectious disease caused by influenza viruses. Symptoms range from mild to severe and often include fever, runny nose, sore throat, muscle pain, headache, coughing, and fatigue. Flu, also called influenza, is an infection of the nose, throat and lungs, which are part of the respiratory system.

General Overview

Flu is a contagious respiratory illness that infect the nose, throat, and sometimes the lungs. Learn about the current flu season and find resources related to flu surveillance and past seasons. Learn more about who is at higher risk of developing potentially serious flu complications. For further details regarding this matter, you may consult our report on Cape Girardeau County Accident Reports has been widely referenced by readers seeking further clarification on this subject. 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 get better on their own. Learn about identifying flu symptoms, how the diagnosis works, common complications, and more. Getting vaccinated every year is the best way to avoid getting sick with the flu.

Key Points

Getting vaccinated every year is the best way to avoid getting sick with the flu. The flu, common cold and COVID-19 have similar symptoms. The flu and COVID-19 can be severe, but colds rarely are. What is the flu (influenza)? The flu is an illness you get from the influenza virus. Flu (influenza) is a contagious respiratory illness that can turn serious. Learn flu symptoms, prevention, vaccine facts, and treatment options from NFID. The flu, also called influenza, is a respiratory infection caused by viruses. If you find this information valuable, you might also appreciate our comprehensive exploration of Pixie Low Maintenance Short Red Hairabout offers a detailed breakdown on this subject. The flu, also called influenza, is a respiratory infection caused by viruses. Each year, millions of Americans get sick with the flu. Sometimes it causes mild illness. But it can also be serious or even deadly, especially for people over 65, newborn babies, and people with certain chronic illnesses.

Topic Outline

The flu is an illness you get from the influenza virus. Flu (influenza) is a contagious respiratory illness that can turn serious. Learn flu symptoms, prevention, vaccine facts, and treatment options from NFID. The flu, also called influenza, is a respiratory infection caused by viruses. Each year, millions of Americans get sick with the flu. Sometimes it causes mild illness. But it can also be serious or even deadly, especially for people over 65, newborn babies, and people with certain chronic illnesses. What causes the flu?

What is the flu (influenza)? The flu is an illness you get from the influenza virus. Flu (influenza) is a contagious respiratory illness that can turn serious. Learn flu symptoms, prevention, vaccine facts, and treatment options from NFID. The flu, also called influenza, is a respiratory infection caused by viruses. Each year, millions of Americans get sick with the flu.