Learn about flu, including symptoms, prevention methods, and treatment options.

Dec 19, 2025 · Overview 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 …

Jul 15, 2025 · In the United States, the main flu season stretches from October to March. Cases of the flu peak between December and February, according to the CDC. But you can get the flu at any time …

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, …

The meaning of FLUE is an enclosed passageway for directing a current.

Jan 13, 2026 · Infectious disease doctors explain why the flu is striking so hard and how to prevent and manage the illness.

Feb 28, 2024 · What is the flu? 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 …

Feb 28, 2025 · WHO fact sheet on influenza: includes key facts, definition, symptoms, transmission, seasonal epidemics, effects, prevention, WHO response.

Nov 19, 2024 · WebMD tells you which symptoms signal the flu - and when to call the doctor.

A barely perceptible contrail of flue gas extends from the refinery's stack in the distance all the way to this massive and artificial cloud.